The industry standard for API mocking in JavaScript.
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API Mocking GitHub Repositories (2026) · Open Source Tools
Discover the best API Mocking open source repositories on GitHub. Explore trending tools, live star counts, source code, and developer projects updated daily.
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4 matching projects · updated Nov 13, 2026
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Simulate API failures, throttling, and chaos — all from your command line.
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Lightweight service virtualization/ API simulation / API mocking tool for developers and testers
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A sandbox for the third-party APIs you depend on. Built from the provider's spec, it fails on purpose, and it replays the exact failure production hit.
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