Decoy

Local server mocks in macOS, all in a lightweight native app

Decoy lets developers create mock services locally. No need for Docker or heavy Electron apps. I built it to test webhook requests coming from my own applications, testing my API wrappers and seeing how my app reacts to redirects, timeouts and failures. You can even mock full webpages to test your scrapers and AI agents against, without risking being rate limited or blocked. All in a beautiful native app. It weighs only 10MB and starts up super quickly and there is no tracking at all.