API Guides
Curated lists to help you find the right API faster. Filter by auth type, security, and browser compatibility.
APIs That Require No Authentication
APIs you can call right now with zero setup — no API keys, no OAuth, no signup. Perfect for prototyping and learning.
Browse
Secure APIs — HTTPS Only
APIs that support encrypted connections. Essential for production applications handling sensitive data.
Browse
CORS-Friendly APIs for Frontend Development
APIs with CORS support that work directly from the browser. No proxy server needed — call them from your frontend.
Browse
APIs Using OAuth Authentication
APIs that use OAuth for secure, delegated access. Industry standard for user-authorized API access.
Browse
APIs Using API Key Authentication
APIs that authenticate with a simple API key. Quick to set up — just sign up, get a key, and start calling.
Browse