Aviationstack ◆
Aviationstack is a scalable REST API for real-time flight tracking, historical flight data, airport info, and global aviation data.

Apislist (Developer Tools): Apislist is a curated directory of 700+ free public web APIs, organized by category for easy discovery. Pricing: from Free. (data verified July 2026)
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Apislist (The Public APIs List) is a community-powered marketplace that curates and categorizes hundreds of free public web APIs. It solves the problem of scattered API documentation by offering a single, searchable directory where developers can discover APIs for finance, geocoding, games, government data, machine learning, and more.
Apislist is built for developers, hobbyists, and product builders who need to quickly find reliable, free APIs for prototyping, integrations, or side projects. It is not for teams seeking enterprise-grade API management or paid API subscriptions—this directory focuses on public, often no-cost endpoints.
Use Apislist to find a currency exchange API like Frankfurter.app for a financial dashboard, a Harry Potter character API for a fan site, or a barcode scanner API like EAN-Search for an inventory app. Browse categories such as Cryptocurrency, Transportation, and Data Validation to discover exactly what you need.
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Apislist pricing: Free. Billing model: Free.
Access all 700+ public APIs listed on Apislist with no cost—browse categories, search, and view API details. No account or payment needed. Each API may have its own usage limits or keys; always check individual API documentation.
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