FlareSolverr is a proxy server with a REST API that uses a headless Chrome session to solve Cloudflare/DDoS-GUARD challenges and return HTML and cookies.
15.3k stars1.2k forksMITlast commit Actively maintained

Service that captures, inspects and debugs incoming HTTP requests and webhooks. It provides unique temporary endpoints, live request logs with headers and bodies, replay/share utilities, and search/filtering to test integrations, callbacks, and API endpoints.
FlareSolverr is a proxy server with a REST API that uses a headless Chrome session to solve Cloudflare/DDoS-GUARD challenges and return HTML and cookies.
15.3k stars1.2k forksMITlast commit Actively maintained
webhook is a lightweight Go server for creating HTTP endpoints that trigger scripts or shell commands with rule-based request validation.
12.1k stars874 forksMITlast commit Actively maintained
Open-source API client and HTTP interceptor to test APIs, modify requests and responses, and create API mocks for faster development and debugging.

6.8k stars700 forkslast commit Actively maintained
Capture, inspect and debug webhooks and HTTP requests with customizable responses, real-time WebSocket UI, and memory/Redis/filesystem storage options.

530 stars57 forksMITlast commit Actively maintained
Every option on this page is open source and free to run on your own hardware, so you own the data and there is no subscription to cancel. 4 of 4 shipped a commit in the last six months. Licences in this list: MIT. In exchange you take on hosting, backups and updates yourself.
Browse everything in API Development, Mocking & Testing.