MSW vs Nock: licensing, GitHub activity, and what each is actually for. Neutral comparison, no paid rankings.
MSW: Open source. 18,280 GitHub stars. Mock Service Worker - API mocking library using Service Worker API for seamless request interception in browser and Node.js.
Nock: Open source. 13,127 GitHub stars. HTTP server mocking and expectations library for Node.js. Record and replay HTTP interactions.