head to head · open source
cypress vs vitest
cypress has 51,020 GitHub stars, 3,593 forks, 1,084 open issues and last shipped yesterday. vitest has 17,323 stars, 2,124 forks, 425 open issues and last shipped yesterday. cypress leads on adoption by 195% (51,020 vs 17,323 stars). cypress is written in TypeScript under MIT; vitest is written in TypeScript under MIT. cypress has attracted 7% as many forks as stars, vitest 12%. cypress was the more recently maintained of the two, and both are self-hostable with no licence fee.
Two open source projects, one decision. Both are free and self-hostable — the differences are community size, license terms, language stack and release pace.
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Side by side
| cypress | vitest | |
|---|---|---|
| GitHub stars | ★ 51K | ★ 17K |
| License | MIT | MIT |
| Written in | TypeScript | TypeScript |
| Last push | 2026-11-02 | 2026-11-02 |
| Forks | ⑂ 3.6K | ⑂ 2.1K |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick cypress if
- You weight community size — 51K stars and counting
- You want the MIT license terms
- Your stack matches TypeScript
- You value the larger contributor base for long-term maintenance
pick vitest if
- You want the vitest feature set and don't need the biggest community
- You prefer the MIT license terms
- Your stack matches TypeScript
- You evaluated both and vitest fits your workflow better
About cypress
Documentation Changelog Roadmap The web has evolved. Finally, testing has too. Fast, easy and reliable testing for anything that runs in a browser. Join us, we're hiring . What is Cypress? Installing Install Cypress for Mac, Linux, or Windows, then get started. or or Contributing develop branch Please see our Contributing Guideline which explains repo organization, linting, testing, and other steps. License This project is licensed under the terms of the MIT license. Badges Configure a badge for your project's README to show your test status or test count in the Cypress Cloud. Or let the world know your project…
read the full cypress overview →
About vitest
Vitest Next generation testing framework powered by Vite. Get involved! Documentation Getting Started Examples Why Vitest? 中文文档 Features Vite's config, transformers, resolvers, and plugins. Use the same setup from your app! Jest Snapshot Chai built in for assertions, with Jest expect compatible APIs Smart & instant watch mode, like HMR for tests! Native code coverage via v8 or istanbul . Jest compatible mocking, stubbing, and spies. JSDOM and happy dom for DOM and browser API mocking Browser Mode for running component tests in the browser Components testing (Vue, React, Svelte, Lit, Marko) Benchmarking support…
read the full vitest overview →
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Frequently asked questions
Is cypress or vitest more popular?
cypress has 51,020 GitHub stars and vitest has 17,323. cypress has the larger community by that measure.
Are cypress and vitest free?
Both are open source. cypress is licensed under MIT and vitest under MIT. Neither carries a licence fee.
What is the difference between cypress and vitest?
cypress is written in TypeScript and vitest in TypeScript. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, cypress or vitest?
Choose cypress if you want the larger community (51,020 stars) or its MIT licence terms. Choose vitest if its feature set, stack or MIT licence fits better. Both are self-hostable.