Best Freemium API Tools
Ranked by community votes · Freemium only
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PDF Tamper Detection
One edited bank statement costs $15K–$50K in bad debt
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Postman
API development and management tool
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SerpApi: Google Search API
SerpApi is a real-time API to access Google search results
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Waydev
The engineering intelligence platform that measures AI adoption across your team, tracks its impact from code to production, and quantifies ROI down to every token spent
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SilkDock AI — One API for Every AI Model
Unified AI API gateway
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TIN Validate
Validate tax identification numbers with TIN Validate's web app and API
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StockFit - Fundamentals API, just better
SEC filings API with structured financials, earnings, ETF holdings, and IPO prospectus data
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A
AnyAPI
1,200+ scraping and data APIs behind one key
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Visora
Visora is the trust layer for every image — moderate unsafe content, anonymize faces and PII, and verify identities from a single API
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Supadata
Supadata is one stop-shop API for makers to read web and YouTube content, ready for AI training and retrieval
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Free Currency Conversion and Forex Exchange Rate API
Free Currency Conversion API and Forex Exchange Rates data through REST API in JSON and XML format
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Respectify - Improve Online Discourse
Respectify moderates comments before they post and coaches commenters toward better discourse
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Nobley
Nobley is a no-code website builder for developers and agencies
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A
APIFreaks - API Hub for Developers
APIFreaks is your ultimate API hub - explore high-quality data APIs and find the perfect solution to elevate your development experience
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akta.pro
Access data on 20M+ private companies and real-time news signals with historical archives
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AuthForge
Licensing API for desktop software with hardware locking (HWID), signed validation responses, and flexible usage-based pricing
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APIKumo
Publish any collection as a live MCP endpoint — Claude, Cursor, and Continue discover and call your API automatically
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Kapitol.ai
Every congressional stock disclosure, scored and explained
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Apinator
Free, managed WebSocket server for realtime apps — channels, presence, and messages on a generous free tier, no credit card
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murmr
State-of-the-art TTS built on Qwen3-TTS
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JoJ API
JoJ API is an API marketplace for web scraping, search and real-world data APIs
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LinkdAPI - The best API for professional Data
Access structured professional and company-level data at scale with LinkdAPI
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logostream
The Stock Logo API for fintechs and brokers: 380,000+ stock logos via ticker or ISIN
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Numgate
Unlimited phone validation
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PDF Converter API
High-quality PDF conversion API for developers
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NanoCloud
Create polished visuals and clips in the browser with NanoCloud using text prompts or reference images
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Pahamify | Taklukkan UTBK
Aplikasi belajar online yang seru dilengkapi video pembelajaran yang asik hingga tips agar tetap semangat untuk belajar
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Sendblue
Send iMessage, SMS, and RCS from your CRM or via REST API
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Selbstbild
Analyze any public Hacker News profile with your own LLM API key
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EchoRelay
Describe your API integration once and we run it