A lightweight JavaScript CORS Reverse Proxy designed to run in a Cloudflare Worker.

Use Django To Introduce CORS and Same-Origin Policy

Proxy services, combine origins, use SSI and more during development

The tests demonstrate all 9 common CORS misconfigurations actively: Wildcard origins Origin reflection with credentials Null origin trust Regex bypasses (prefix/suffix) Subdomain trust pivots Preflight caching issues Unsafe methods exposure Private Network Access misconfigs

[WIP] A reliable RPC framework to work around the Same-Origin Policy

A no-nonsense guide to Cross-Origin Resource Sharing — the web security mechanism everyone encounters and nobody fully understands. Covers the Same-Origin Policy, preflight requests, credential handling, and every header you'll ever need. Stop copy-pasting Access-Control-Allow-Origin: * and actually learn what's happening.

A simple Google HTTPS proxy for reaching API's from browser.

A simple implementation of HTTP redirection.

Simple proxy that addresses the restrictions of the same-origin-policy.

Interactive playground that fires real cross-origin requests between local sandboxed origins so you can watch the same-origin policy, credentials rules and preflight caching play out live. 15 guided scenarios.

A beginner-friendly FastAPI project demonstrating CORS, Same-Origin Policy, and secure cross-origin communication between a frontend and backend.

Serverless CF Reverse Proxy to bypass same-origin limitations

In-depth technical reference for CORS, preflight requests, and browser cross-origin security. Source for https://www.cross-origin.com

J2EE application to understand same origin policy.

Diagnose exactly why a browser blocks or allows a cross-origin request. Sends real preflight and actual requests, then explains every Access-Control-* mismatch in plain English. Python 3, stdlib only.

Une démo de la same origin policy

A full fledge REST API server using Express and Mongodb and Node JS.

Node.js HTTP CORS middleware.