The most powerful AI API. Access GPT-4o, DALL-E 3, Whisper, and embeddings. Industry standard for production AI apps.
🔑 Free tier: $5 free credit on signup
📦 Best for: Chatbots, content gen, code assist
Anthropic Claude
Freemium
✓ Verified Mar 2026
Claude is Anthropic's safety-focused AI. Excellent at long documents, nuanced reasoning, and complex coding. Claude 3.5 Sonnet is best-in-class.
🔑 Free tier: Limited free credits on signup
📦 Best for: Long docs, reasoning, coding
Fastest LLM inference on the planet — 500+ tokens/sec. Runs Llama 3.3 70B, Mixtral, and more. The best free LLM API for high-volume tasks.
🔑 Free tier: 14,400 req/day free forever
📦 Best for: High-speed LLM inference
Google's frontier multimodal AI. Gemini 1.5 Pro handles 1M token context windows. Free tier via AI Studio is extremely generous.
🔑 Free tier: 1M tokens/day free
📦 Best for: Long context, multimodal AI
European AI powerhouse. Excellent open-weight models including Mistral 7B, Mixtral 8x7B, and Mistral Large. OpenAI-compatible API.
🔑 Free tier: Free trial credits
📦 Best for: Efficient LLM tasks, coding
Enterprise NLP platform. Best-in-class embeddings and rerank models. Command R+ is excellent for RAG applications.
🔑 Free tier: Trial API key (rate-limited)
📦 Best for: RAG, embeddings, search
Run 100+ open-source models via unified API. Competitive pricing with $1 free credit. OpenAI-compatible for easy migration.
🔑 Free tier: $1 free credit on signup
📦 Best for: Open-source model hosting
One API key to access 100+ LLMs — GPT-4, Claude, Llama, Gemini and more. Free models available. Perfect for model comparison.
🔑 Free tier: Free models always available
📦 Best for: Multi-model apps, cost optimization
Ultra-fast inference for open-source models. Specializes in function calling and structured outputs. Free credits on signup.
🔑 Free tier: Free credits on signup
📦 Best for: Production LLM apps, structured output
The GitHub of AI models — 500K+ models available via unified Inference API. Free tier with rate limits for most models.
🔑 Free tier: Rate-limited free tier
📦 Best for: ML model deployment, NLP tasks
Run any ML model with a simple API. Thousands of community models — Stable Diffusion, Whisper, LLaMA. Pay per second of compute.
🔑 Free tier: Free credits on signup
📦 Best for: Running ML models on-demand
Lightning-fast image and video generation. Run FLUX, ControlNet, and more. Serverless GPU infrastructure with free credits.
🔑 Free tier: Free credits on signup
📦 Best for: Fast image/video gen
AI search with real-time web access. Models include Sonar (web-grounded) and reasoning variants. Pay-per-use with no monthly fee.
🔑 Free tier: Pay per use (no free tier)
📦 Best for: AI-powered web search
Makers of Jamba — a hybrid SSM/Transformer model. Strong at long-form writing and document summarization. Free trial available.
🔑 Free tier: Free trial credits
📦 Best for: Long-form text, summarization
Elon Musk's AI — Grok 2 is trained on real-time X/Twitter data. OpenAI-compatible API. Access to unique real-time data.
🔑 Free tier: Limited beta access
📦 Best for: Real-time data, X/Twitter context
China's frontier AI — DeepSeek V3 rivals GPT-4 at a fraction of the cost. Exceptional at coding and math. Free credits on signup.
🔑 Free tier: Free credits on signup
📦 Best for: Coding, math, reasoning
World's fastest AI inference — Llama 3.1 70B at 2,000+ tokens/sec on wafer-scale chips. Free tier available for developers.
🔑 Free tier: Free tier for developers
📦 Best for: Ultra-fast LLM inference
Enterprise AI chip company with free public API. Runs Llama 3.1 405B — the largest open model. Competitive speeds.
🔑 Free tier: Free tier available
📦 Best for: Large model inference
The original open-source image generation powerhouse. Stable Diffusion XL, SD3, and Stable Video Diffusion via API. High quality, full control.
🔑 Free tier: Free credits on signup
📦 Best for: AI art, product imagery
DALL-E 3 is OpenAI's best image model — exceptional prompt adherence and photorealism. Same API key as GPT models.
🔑 Free tier: $5 free credit on signup
📦 Best for: High-quality AI image gen
Access millions of free stock photos and videos. 200 requests/hour on free tier. Perfect for content creation pipelines.
🔑 Free tier: 200 req/hour forever free
📦 Best for: Stock photos for content
Beautiful, freely-usable stock photography. 50 requests/hour on free tier. Industry standard for developer projects.
🔑 Free tier: 50 req/hour free
📦 Best for: Hero images, backgrounds
1.8M+ free images, videos, and vectors. 100 requests/minute on free tier. No attribution required.
🔑 Free tier: 100 req/min free
📦 Best for: Stock media, illustrations
Reliable image hosting with upload API. 1,250 requests/day free. Great for user-generated content workflows.
🔑 Free tier: 1,250 req/day free
📦 Best for: Image upload/hosting
Powerful image and video CDN with on-the-fly transformation. Resize, crop, filter with URL parameters. Generous free plan.
🔑 Free tier: 25GB storage + 25GB bandwidth free
📦 Best for: Image/video CDN, transformations
Adobe's AI image generator — commercially safe, trained on licensed content. Integrates with Creative Cloud. Professional quality.
🔑 Free tier: Credits on signup
📦 Best for: Commercial-safe AI art
Best-in-class text rendering in AI images. Ideogram 2.0 is exceptional for logos, posters, and typography-heavy designs.
🔑 Free tier: Free credits on signup
📦 Best for: Text in images, logos, posters
150 free tokens daily — generate images, train custom models, and use fine-tuned art styles. Popular for game art and characters.
🔑 Free tier: 150 tokens/day free
📦 Best for: Game art, character design
The world's GIF library. Search and embed millions of GIFs. 100 requests/hour on free developer tier.
🔑 Free tier: 100 req/hour free
📦 Best for: GIF search, reaction animations
Google's GIF platform (powers Android keyboard). Search and embed GIFs with generous free limits.
🔑 Free tier: Generous free tier
📦 Best for: GIF search, messaging apps
Best AI voice synthesis on the planet. 1000+ voices, voice cloning, multilingual support. 10K chars/month free forever.
🔑 Free tier: 10K characters/month free
📦 Best for: AI voiceovers, podcasts, avatars
Enterprise speech-to-text with AI features: speaker diarization, sentiment analysis, PII redaction, chapter detection. $100 free credit.
🔑 Free tier: $100 free credit on signup
📦 Best for: Transcription, meeting notes
Ultra-fast real-time speech-to-text. Used by Twilio, Spotify, and major enterprises. $200 free credit to start.
🔑 Free tier: $200 free credit on signup
📦 Best for: Real-time transcription, voice apps
OpenAI's Whisper is the gold standard for accurate transcription. 99 language support. Same key as GPT/DALL-E.
🔑 Free tier: $5 free credit on signup
📦 Best for: Multilingual transcription
Professional AI voice studio with 120+ lifelike voices. Excellent for corporate explainers and e-learning content.
🔑 Free tier: 10 minutes free trial
📦 Best for: E-learning, corporate voice
Ultra-realistic TTS with voice cloning. 907+ voices across 142 languages. Popular for podcast automation.
🔑 Free tier: Free trial available
📦 Best for: Podcast automation, TTS
Text-to-speech optimized for long-form content reading. Natural pacing and emphasis. Free tier available.
🔑 Free tier: Free tier available
📦 Best for: Audio articles, accessibility
Generate full songs — lyrics, vocals, instruments — with a single prompt. 50 free songs/day via web, API access for builders.
🔑 Free tier: 50 songs/day on free plan
📦 Best for: AI music generation
AI music generation competing with Suno. Exceptional at specific genres — jazz, metal, classical. Free tier with daily credits.
🔑 Free tier: Free tier with daily credits
📦 Best for: Genre-specific AI music
Royalty-free AI music for video creators. Customize mood, tempo, instruments. No copyright claims on YouTube.
🔑 Free tier: Limited free preview
📦 Best for: Background music for videos
AI music composer specializing in cinematic and classical scores. Used by filmmakers and game devs. Free tier available.
🔑 Free tier: Free tier available
📦 Best for: Cinematic scores, game music
Create AI music and distribute to Spotify, Apple Music instantly. Free plan lets you create and publish unlimited songs.
🔑 Free tier: Free plan — unlimited creation
📦 Best for: Music streaming distribution
Create AI avatar videos with photorealistic talking heads. Voice cloning, multi-language. Industry standard for AI video creation.
🔑 Free tier: 1 free video/month
📦 Best for: AI avatar videos, training
Hollywood-grade AI video generation. Gen-3 Alpha creates stunning 10-second clips from text or images. 125 free credits.
🔑 Free tier: 125 credits on signup
📦 Best for: AI video clips, visual effects
Access YouTube's full data — videos, channels, playlists, comments, analytics. 10K units/day free. Essential for any YouTube automation.
🔑 Free tier: 10K units/day free
📦 Best for: YouTube automation, analytics
Professional video hosting with upload, player customization, and analytics API. 500MB/week on free plan.
🔑 Free tier: 500MB/week upload free
📦 Best for: Video hosting, embedding
Dream Machine generates photorealistic video from text/images. Also creates 3D scenes. Free credits on signup.
🔑 Free tier: Free credits on signup
📦 Best for: Photorealistic video gen
Kling 1.5 from Kuaishou — exceptional 5-second video generation. Competitive with Sora. Free trial credits available.
🔑 Free tier: Free trial credits
📦 Best for: Cinematic AI video
Pika 2.0 generates cinematic videos and animations. Excellent at character animation and scene transitions.
🔑 Free tier: Free credits on signup
📦 Best for: Character animation, video gen
Animate photos and create talking head videos. REST API for programmatic video creation. 20 free credits included.
🔑 Free tier: 20 free video credits
📦 Best for: Talking head videos, photo animation
Enterprise AI video platform with 140+ AI presenters. Used by Fortune 500 companies. 1 free video on signup.
🔑 Free tier: 1 free video on signup
📦 Best for: Corporate training, explainers
Auto-generate captions, cut silences, and create short-form video content. Popular with TikTok and Reels creators.
🔑 Free tier: Free tier available
📦 Best for: Auto-captions, short-form video
Privacy-first search API with 2K free requests/month. Clean results, no tracking. Good alternative to Google Search API.
🔑 Free tier: 2K requests/month free
📦 Best for: Web search, SEO research
Google Search results via clean JSON API. 2,500 free searches on signup. 10x cheaper than SerpAPI. Perfect for AI agents.
🔑 Free tier: 2,500 free searches on signup
📦 Best for: Google results for AI agents
Full Google Search results including Maps, Shopping, Images, News. 100 free searches/month. Very reliable.
🔑 Free tier: 100 searches/month free
📦 Best for: Search result parsing
AI-optimized search built for LLM agents. Returns clean, structured results. 1K searches/month free. Used in LangChain.
🔑 Free tier: 1K searches/month free
📦 Best for: LLM agents, AI research tools
Microsoft's search API via Azure. 1K calls/month on free tier. Access web, image, video, and news search.
🔑 Free tier: 1K calls/month free (Azure)
📦 Best for: Web search integration
AI-powered search with conversational answers. Research and coding modes. Developer access available.
🔑 Free tier: Free developer tier
📦 Best for: AI-augmented search
Neural search engine trained on the web. Returns semantically relevant results, not just keyword matches. 1K searches/month free.
🔑 Free tier: 1K searches/month free
📦 Best for: Semantic search, research
Jina AI Reader
FreeNo Key
✓ Verified Mar 2026
Convert any URL to clean markdown for LLMs. No API key needed! Prefix any URL with r.jina.ai — it just works.
🔑 Free tier: Completely free, no key needed
📦 Best for: URL-to-markdown for LLMs
LLM-ready web scraping — crawl websites, extract structured data, and clean HTML for AI processing. 500 pages/month free.
🔑 Free tier: 500 pages/month free
📦 Best for: Web scraping for AI
Handles proxies, CAPTCHAs, and JS rendering for web scraping. 5K free requests/month. Simple URL parameter API.
🔑 Free tier: 5K requests/month free
📦 Best for: Web scraping, data collection
Cloud headless Chrome — run Puppeteer/Playwright scripts without infrastructure. 6 hours/month free.
🔑 Free tier: 6 browser hours/month free
📦 Best for: Headless browser automation
Aggregate news from 80K+ sources worldwide. Search by keyword, source, or topic. 100 requests/day on free developer plan.
🔑 Free tier: 100 requests/day free
📦 Best for: News aggregation, content ideas
Full access to The Guardian's journalism archive — 1.9M+ articles since 1999. Very generous rate limits, free forever.
🔑 Free tier: 12 calls/sec, free forever
📦 Best for: Quality journalism, research
Access NYT's article archive, most popular, movie reviews, and books bestsellers. 4K requests/day free.
🔑 Free tier: 4K requests/day free
📦 Best for: Premium news content
Access Reddit posts, comments, subreddits, and user data. 100 requests/minute free. Essential for trend research.
🔑 Free tier: 100 req/min free
📦 Best for: Trend research, community data
Y Combinator's tech news board — fully public API with no key required. Real-time top stories, comments, and AskHN.
🔑 Free tier: Unlimited, no key needed
📦 Best for: Tech trends, startup news
Developer-focused articles and blog posts. 30 requests/30 seconds free. Great for curating developer content.
🔑 Free tier: 30 req/30s free
📦 Best for: Developer content curation
Real-time global news from 7,500+ sources. 500 requests/month on free tier. Multiple language support.
🔑 Free tier: 500 requests/month free
📦 Best for: Global news aggregation
Free news API with 600 requests/month. Covers world news, tech, business. Simple JSON responses.
🔑 Free tier: 600 requests/month free
📦 Best for: News feed integration
Twilio's email delivery platform — industry standard for transactional email. 100 emails/day free forever, no credit card.
🔑 Free tier: 100 emails/day forever free
📦 Best for: Transactional email, newsletters
Developer-first email API with excellent deliverability. 100 emails/day free for 3 months, then pay-as-you-go.
🔑 Free tier: 100/day free (3 months)
📦 Best for: Developer email integration
Modern email API built for developers. React Email integration, 3K emails/month free forever. Clean, simple SDK.
🔑 Free tier: 3K emails/month free forever
📦 Best for: Developer-first email sending
Premium transactional email with 98%+ deliverability. Loved by SaaS companies. 100 emails/month on free sandbox.
🔑 Free tier: 100 emails/month free sandbox
📦 Best for: High-deliverability transactional
Industry standard for SMS, WhatsApp, and voice calls. $15 free trial credit. Pay per message after that.
🔑 Free tier: $15 free trial credit
📦 Best for: SMS notifications, 2FA
SMS and voice API (formerly Nexmo). Global reach across 200+ countries. $2 free credit on signup.
🔑 Free tier: $2 free credit on signup
📦 Best for: Global SMS messaging
Omnichannel messaging — SMS, WhatsApp, Voice, Email in one API. Free credits on signup for testing.
🔑 Free tier: Free credits on signup
📦 Best for: Omnichannel messaging
All-in-one email marketing + SMS + CRM. 300 emails/day free forever. Excellent deliverability and template editor.
🔑 Free tier: 300 emails/day free forever
📦 Best for: Email marketing, automation
Developer-first email platform with 3K emails/month free. Simple REST API and React Email compatible.
🔑 Free tier: 3K emails/month free
📦 Best for: Startup email infrastructure
The gold standard for payment APIs. Accept cards, bank transfers, subscriptions worldwide. No monthly fee — just 2.9%+30¢ per transaction.
🔑 Free tier: No monthly fee, pay per transaction
📦 Best for: Payment processing, subscriptions
Global payment processing used by 400M+ users. Free sandbox for testing. Standard transaction fees in production.
🔑 Free tier: Free sandbox environment
📦 Best for: Global payments, checkout
Merchant of record for SaaS — handles VAT, taxes, and compliance. No monthly fee. Perfect for indie developers.
🔑 Free tier: No monthly fee — per-transaction only
📦 Best for: SaaS payments, digital products
Cryptocurrency market data — prices, market cap, volume for 10K+ coins. 10K free calls/month, no credit card.
🔑 Free tier: 10K calls/month free
📦 Best for: Crypto price data, portfolio apps
Free stock market data — real-time and historical prices, fundamentals, technical indicators. 25 requests/day free.
🔑 Free tier: 25 requests/day free
📦 Best for: Stock price data, trading tools
Financial data for stocks, options, forex, and crypto. 5 requests/minute on free tier. Real-time and historical.
🔑 Free tier: 5 req/min free tier
📦 Best for: Financial data, trading bots
Real-time and historical currency exchange rates for 200+ currencies. 1K requests/month free.
🔑 Free tier: 1K requests/month free
📦 Best for: Currency conversion, forex apps
Simple currency conversion API with 1.5K requests/month free. 160+ currencies, updated hourly.
🔑 Free tier: 1.5K requests/month free
📦 Best for: Currency conversion
Post tweets, read timelines, search tweets, and manage accounts programmatically. 1,500 tweets/month on free tier.
🔑 Free tier: 1,500 tweets/month free
📦 Best for: Twitter automation, social tools
Access Facebook Pages, Instagram Business, ads, and Messenger. Free with app approval. Essential for social media tools.
🔑 Free tier: Free with app approval
📦 Best for: Facebook/Instagram automation
Post to LinkedIn, read company data, manage campaigns. Partner program access for advanced features.
🔑 Free tier: Free with app approval
📦 Best for: LinkedIn automation, B2B tools
TikTok for Developers — login, video upload, user data, and analytics. Approval required but free to use.
🔑 Free tier: Free with app approval
📦 Best for: TikTok automation, analytics
Instagram Graph API
Freemium
✓ Verified Mar 2026
Post to Instagram Business, manage Stories, read insights. Part of Meta's Graph API family. Free with approval.
🔑 Free tier: Free with business approval
📦 Best for: Instagram scheduling, analytics
Create pins, manage boards, access analytics, and shopping catalog. Free tier for most endpoints.
🔑 Free tier: Free developer tier
📦 Best for: Pinterest automation, e-commerce
Build Discord bots and apps — send messages, manage servers, read user data. Completely free, no limits on bots.
🔑 Free tier: Completely free
📦 Best for: Discord bots, community tools
Send messages, read channels, create slash commands, and build Slack apps. Free with your Slack workspace.
🔑 Free tier: Free with Slack account
📦 Best for: Team notifications, Slack bots
Create Telegram bots with zero cost. No key limits, no rate fees. Telegram is developer-friendly with excellent docs.
🔑 Free tier: Completely free, no key limit
📦 Best for: Telegram bots, notifications
The world's most powerful maps API. Geocoding, directions, Places, Street View. $200/month free credit.
🔑 Free tier: $200/month credit (generous free tier)
📦 Best for: Maps, geocoding, location apps
OpenStreetMap Nominatim
FreeNo Key
✓ Verified Mar 2026
Free geocoding powered by OpenStreetMap. No API key needed! 1 request/second limit. Community-maintained.
🔑 Free tier: Free, no API key needed
📦 Best for: Geocoding, address lookup
Beautiful custom maps with 50K free loads/month. Turn-by-turn navigation, custom styling, and offline support.
🔑 Free tier: 50K map loads/month free
📦 Best for: Custom maps, navigation
Enterprise-grade maps from Nokia's mapping division. 250K transactions/month free. Excellent routing APIs.
🔑 Free tier: 250K transactions/month free
📦 Best for: Enterprise navigation, routing
IP geolocation — country, city, coordinates from any IP address. 45 req/min free, no signup required. Fast and simple.
🔑 Free tier: 45 req/min, no key needed
📦 Best for: IP geolocation, analytics
Detailed IP intelligence — company, ASN, carrier, VPN detection. 50K requests/month on free plan.
🔑 Free tier: 50K requests/month free
📦 Best for: IP intelligence, fraud detection
Current weather and 5-day forecasts for any location. 60 calls/minute on free tier. Used by millions of apps.
🔑 Free tier: 60 calls/minute free
📦 Best for: Weather widgets, weather apps
Comprehensive weather API with 1M calls/month free. Current, forecast, historical, marine, and air quality data.
🔑 Free tier: 1M calls/month free
📦 Best for: Weather dashboards, travel apps
Free weather API with no key needed. Unlimited requests! Covers worldwide forecasts up to 16 days. No rate limits.
🔑 Free tier: Unlimited, no key needed
📦 Best for: Free weather integration
The open-source Firebase alternative. PostgreSQL database, auth, realtime subscriptions, and file storage. 500MB free forever.
🔑 Free tier: 500MB database free forever
📦 Best for: Full-stack app backend
Google's app development platform. Firestore NoSQL database, Auth, Hosting, Functions. Spark plan is free forever.
🔑 Free tier: Spark plan: 1GB storage free
📦 Best for: Mobile/web app backend
Serverless MySQL with git-like database branching. Deploy schema changes without downtime. 5GB storage free.
🔑 Free tier: 5GB storage free tier
📦 Best for: MySQL at scale, schema branching
Serverless Postgres with database branching. Scale to zero when idle. 3GB storage free. TypeScript-friendly.
🔑 Free tier: 3GB storage free
📦 Best for: Serverless Postgres
The leading vector database for AI applications. Store and search embeddings at scale. 1 free index, 100K vectors.
🔑 Free tier: 1 free index, 100K vectors
📦 Best for: RAG, semantic search, AI memory
Open-source vector database with built-in ML models. GraphQL + REST API. Free sandbox on Weaviate Cloud.
🔑 Free tier: Free sandbox tier
📦 Best for: AI-native vector search
High-performance vector database written in Rust. Excellent filtering and payload storage. 1GB free on cloud.
🔑 Free tier: 1GB free on Qdrant Cloud
📦 Best for: Production vector search
Redis as a service — lightning fast in-memory cache and data structure store. 30MB free forever.
🔑 Free tier: 30MB free forever
📦 Best for: Caching, session storage, queues
Document database in the cloud. 512MB free forever on M0 cluster. MongoDB's managed database service.
🔑 Free tier: 512MB free forever
📦 Best for: Document storage, flexible schema
S3-compatible object storage with zero egress fees. 10GB free. Store files without paying bandwidth costs.
🔑 Free tier: 10GB free, zero egress fees
📦 Best for: File storage, static assets
Industry-standard object storage by Amazon. 5GB free for 12 months. S3 is compatible with 100s of tools.
🔑 Free tier: 5GB free for 12 months
📦 Best for: Cloud file storage
10x cheaper than AWS S3. S3-compatible API. 10GB free forever. Popular for backups and media storage.
🔑 Free tier: 10GB free forever
📦 Best for: Cheap cloud storage, backups
The world's most-used web analytics. Free forever. GA4 Reporting API for programmatic access to your data.
🔑 Free tier: Free forever
📦 Best for: Website analytics, user tracking
Product analytics focused on user events and funnels. 20M events/month free. Excellent for SaaS apps.
🔑 Free tier: 20M events/month free
📦 Best for: Product analytics, funnels
Open-source product analytics — events, funnels, recordings, feature flags. 1M events/month free on cloud.
🔑 Free tier: 1M events/month free
📦 Best for: Full-stack product analytics
Enterprise product analytics with powerful behavioral analysis. 50K monthly tracked users free.
🔑 Free tier: 50K MTU free
📦 Best for: Mobile & web analytics
Privacy-friendly, lightweight analytics — GDPR compliant, no cookies. Can self-host for free or use cloud.
🔑 Free tier: Self-hostable for free
📦 Best for: Privacy-first analytics
Open-source Google Analytics alternative. 10K pageviews/month free on Umami Cloud, unlimited on self-hosted.
🔑 Free tier: 10K pageviews/month free cloud
📦 Best for: Simple, private analytics
Error tracking and performance monitoring. 5K errors/month free. Find and fix crashes in production.
🔑 Free tier: 5K errors/month free
📦 Best for: Error monitoring, crash reporting
Full-stack monitoring — infrastructure, APM, logs, and synthetics. Free for up to 5 hosts.
🔑 Free tier: 5 hosts free
📦 Best for: Infrastructure monitoring
Full observability platform — APM, logs, traces, dashboards. 100GB free data/month forever.
🔑 Free tier: 100GB data/month free forever
📦 Best for: Full observability stack
The most popular authentication platform. SSO, social login, MFA, RBAC. 7.5K monthly active users free.
🔑 Free tier: 7.5K MAU free forever
📦 Best for: Auth for web/mobile apps
Developer-first auth for React and Next.js. Beautiful pre-built components, 10K MAU free. Zero-config setup.
🔑 Free tier: 10K MAU free
📦 Best for: Modern web app auth
Authentication built into Supabase. 50K MAU free — email, phone, social login, SSO. Integrated with Supabase DB.
🔑 Free tier: 50K MAU free
📦 Best for: Full-stack auth + database
Firebase Authentication — free for unlimited users. Google, Apple, Facebook, email, phone login. Integrates with Firestore.
🔑 Free tier: Unlimited users free
📦 Best for: Mobile app authentication
Check if passwords or emails have appeared in data breaches. Used by 1Passwords, Firefox, and major browsers.
🔑 Free tier: Free for personal use
📦 Best for: Password security, breach detection
Find and verify professional email addresses. 25 searches/month free. Essential for B2B outreach.
🔑 Free tier: 25 searches/month free
📦 Best for: Email finding, lead gen
Suite of validation APIs — email verification, phone validation, IP geolocation, and more. 100 req/month free each.
🔑 Free tier: 100 requests/month per API free
📦 Best for: Data validation, verification
Access repositories, issues, pull requests, actions, and user data. 5K requests/hour authenticated. Essential for dev tools.
🔑 Free tier: 5K requests/hour free
📦 Best for: Dev tools, repo automation
Full DevOps platform API — repos, CI/CD pipelines, issues, merge requests. Generous rate limits on free tier.
🔑 Free tier: Generous free limits
📦 Best for: DevOps automation, CI/CD
Deploy and manage Vercel projects programmatically. Trigger deployments, manage env vars, check status. Free hobby plan.
🔑 Free tier: Free hobby plan
📦 Best for: Frontend deployment automation
Deploy and manage Netlify sites via API. 100GB bandwidth/month free. Trigger builds, manage forms, split testing.
🔑 Free tier: 100GB bandwidth/month free
📦 Best for: Static site deployment
Manage DNS, CDN, Workers, Pages, and security via API. Cloudflare's free plan is the most generous in the industry.
🔑 Free tier: Extremely generous free plan
📦 Best for: CDN, DNS, edge computing
Simple cloud deployment — push code, get a URL. $5 free credit/month. Postgres, Redis, and custom services included.
🔑 Free tier: $5 free credit/month
📦 Best for: Simple cloud hosting
Modern cloud hosting with free static sites, cron jobs, and web services. Postgres included. Developer-friendly.
🔑 Free tier: Free static sites + web services
📦 Best for: Cloud app hosting
Run Docker containers globally at the edge. Generous free allowances — 3 VMs, 3GB storage. Great for global apps.
🔑 Free tier: 3 VMs + 3GB storage free
📦 Best for: Global container deployment
Spreadsheet meets database — powerful REST API for your Airtable bases. 1K records/base on free plan.
🔑 Free tier: 1K records/base free
📦 Best for: No-code data workflows
Programmatic access to Notion pages and databases. Build integrations that read/write to your workspace.
🔑 Free tier: Free with Notion account
📦 Best for: Knowledge management, wikis
Trigger and interact with Zapier automations via API. 5 free zaps. Connect 5,000+ apps programmatically.
🔑 Free tier: 5 free zaps
📦 Best for: Automation workflows
Open-source workflow automation — Zapier alternative you can self-host. Free forever on your own server.
🔑 Free tier: Free self-hosted (unlimited)
📦 Best for: Self-hosted automation
Visual workflow builder with 1K ops/month free. Powerful scenario builder for complex automations.
🔑 Free tier: 1K operations/month free
📦 Best for: Visual automation builder
REST Countries
FreeNo Key
✓ Verified Mar 2026
Country data — flags, population, languages, currencies, calling codes. No API key required. Unlimited requests.
🔑 Free tier: Unlimited, no key required
📦 Best for: Country data, flag display
Free Dictionary API
FreeNo Key
✓ Verified Mar 2026
Look up word definitions, synonyms, phonetics, and examples. No API key needed. Great for educational apps.
🔑 Free tier: Unlimited, no key required
📦 Best for: Word definitions, vocabulary apps
Generate QR codes for any URL or text via simple GET request. No API key needed. Returns PNG image directly.
🔑 Free tier: Unlimited, no key required
📦 Best for: QR code generation
Random User Generator
FreeNo Key
✓ Verified Mar 2026
Generate realistic fake user data for testing — names, photos, emails, addresses. No API key needed.
🔑 Free tier: Unlimited, no key required
📦 Best for: Test data generation
JSONPlaceholder
FreeNo Key
✓ Verified Mar 2026
The classic fake REST API for prototyping. Posts, users, todos, comments — all pre-populated. No key needed.
🔑 Free tier: Unlimited, no key required
📦 Best for: API prototyping, testing
Complete Pokémon data API — all 1,000+ Pokémon, moves, abilities, types. Beloved by developers for testing.
🔑 Free tier: Unlimited, no key required
📦 Best for: Game data, practice projects
Safe, filtered joke API with programming, general, and dark humor categories. No key needed.
🔑 Free tier: Unlimited, no key required
📦 Best for: Fun features, humor bots
Access NASA's data — Astronomy Picture of the Day, Mars Rover photos, asteroid data, and more. 1K req/hour free.
🔑 Free tier: 1K requests/hour free
📦 Best for: Space data, science apps
Internet Archive's book database — search 20M+ books by title, author, or ISBN. No API key needed.
🔑 Free tier: Unlimited, no key required
📦 Best for: Book search, library apps
Worldwide public holidays API covering 200+ countries. 1K requests/month free. Great for scheduling apps.
🔑 Free tier: 1K requests/month free
📦 Best for: Holiday data, calendar apps
Access Twitch streams, games, clips, and user data. Generous free limits. Essential for gaming content tools.
🔑 Free tier: Generous free limits
📦 Best for: Twitch bots, stream overlays
Access Spotify's music catalog — tracks, albums, artists, playlists, audio features. Free with Spotify account.
🔑 Free tier: Free with Spotify account
📦 Best for: Music apps, playlist tools
Music data and scrobbling — artist info, track data, user listening history. Unlimited free requests.
🔑 Free tier: Unlimited free requests
📦 Best for: Music tracking, recommendations
URL shortening and link management. 50 free shortened links/month. Track click analytics on shortened URLs.
🔑 Free tier: 50 links/month free
📦 Best for: URL shortening, link tracking
Best-in-class AI translation — often better quality than Google Translate. 500K characters/month free on Free API.
🔑 Free tier: 500K characters/month free
📦 Best for: High-quality translation
Google Translate API
Freemium
✓ Verified Mar 2026
Translate text to 100+ languages. 500K characters/month on free tier. Language detection included.
🔑 Free tier: 500K chars/month free
📦 Best for: Multi-language apps
Extract text from images and PDFs via API. 500 requests/month free. Supports 25+ languages.
🔑 Free tier: 500 requests/month free
📦 Best for: Image text extraction, document processing
Image analysis — object detection, OCR, face detection, landmark recognition. 1K units/month free.
🔑 Free tier: 1K units/month free
📦 Best for: Image recognition, content moderation
Email marketing platform — manage lists, send campaigns, track analytics. 1K contacts and 1K emails/month free.
🔑 Free tier: 1K contacts free forever
📦 Best for: Email marketing, newsletters
Creator-focused email platform. 1K subscribers free with unlimited emails. Popular with bloggers and YouTubers.
🔑 Free tier: 1K subscribers free
📦 Best for: Creator newsletters
Modern newsletter platform. 2.5K subscribers free. API access for programmatic newsletter management.
🔑 Free tier: 2.5K subscribers free
📦 Best for: Newsletter management
Read and write Google Calendar events programmatically. Free with Google account. Essential for scheduling apps.
🔑 Free tier: Free with Google account
📦 Best for: Calendar integration, scheduling
Access Microsoft 365 data — Outlook, Teams, OneDrive, SharePoint. Free with Microsoft account.
🔑 Free tier: Free with Microsoft account
📦 Best for: Office 365 integration
File storage, sync, and sharing API. 5GB free storage. Used for file-based automation workflows.
🔑 Free tier: 5GB free storage
📦 Best for: File sync, cloud storage
Manage Google Drive files and folders programmatically. 15GB free storage. Integrated with Docs, Sheets, Slides.
🔑 Free tier: 15GB free storage
📦 Best for: Document management, file storage
Create and manage Zoom meetings, webinars, and recordings programmatically. Free with Zoom account.
🔑 Free tier: Free with Zoom account
📦 Best for: Meeting automation, webinars
ISS Location API
FreeNo Key
✓ Verified Mar 2026
Real-time International Space Station location — latitude, longitude, altitude. No key needed!
🔑 Free tier: Unlimited, no key required
📦 Best for: Space tracking, education
Convert HTML to PDF via API. 50 free credits/month. Supports custom CSS, headers, footers, page sizes.
🔑 Free tier: 50 credits/month free
📦 Best for: HTML to PDF conversion
Clearbit Logo API
FreeNo Key
✓ Verified Mar 2026
Fetch company logos by domain name. No API key needed! Returns SVG/PNG logos for thousands of companies.
🔑 Free tier: Completely free, no key needed
📦 Best for: Company logos, brand assets
Create and manage forms/surveys, retrieve responses. 10 responses/month on free plan. Beautiful form UIs.
🔑 Free tier: 10 responses/month free
📦 Best for: Forms, surveys, quizzes
Scheduling automation — read/create events, manage availability. Free with Calendly account.
🔑 Free tier: Free with Calendly account
📦 Best for: Meeting scheduling, booking
eSignature API — send, sign, and manage documents programmatically. Free developer sandbox available.
🔑 Free tier: Free developer sandbox
📦 Best for: eSignature workflows
Customer support platform API — tickets, users, organizations. Free tier available for small teams.
🔑 Free tier: Free tier available
📦 Best for: Customer support automation
Suite of utility APIs — document conversion, image processing, virus scanning. 800 calls/month free.
🔑 Free tier: 800 calls/month free
📦 Best for: Document processing, file conversion
Detailed IP geolocation with timezone, currency, calling code. 1K requests/day on free plan.
🔑 Free tier: 1K requests/day free
📦 Best for: IP-based personalization
Open-source machine translation — fully self-hostable for unlimited free use. 16+ language pairs.
🔑 Free tier: Free self-hosted
📦 Best for: Privacy-first translation
Enterprise cloud storage API. 10GB free storage. Integrates with Office 365, Google Workspace, Slack.
🔑 Free tier: 10GB free storage
📦 Best for: Enterprise file management