Cypress vs SeleniumBase
Which should you use? A side-by-side look at what each one does, who it suits, what it costs, how hard it is to set up, and where each falls short.
Open source · MIT
A JavaScript tool for automated end-to-end and component testing of web apps in a browser.
Open source · MIT
Python framework for browser automation, testing, and scraping, with optional stealth browser features.
The short answer
Choose Cypress if you need…
- Developers who want automated browser tests for a web application
- Teams that already use npm, Yarn, or pnpm in their JavaScript projects
- People testing components from frameworks mentioned in the project topics, such as React, Vue, Angular, or Svelte
Choose SeleniumBase if you need…
- Python developers writing automated browser tests for websites
- People who already use Selenium or pytest and want a higher-level API
- Developers building scrapers for sites that block standard automated browsers
- Teams wanting an MCP server so AI agents can drive a browser
Side-by-side
| Cypress | SeleniumBase | |
|---|---|---|
| Type | Dev tool | Library |
| Price | Free and open source | Free and open source |
| Licence | MIT | MIT |
| GitHub stars | 51k | 13.2k |
| Setup difficulty | Beginner | Intermediate |
| How you get it | Install with a package manager | Install with a package manager |
| Main language | TypeScript | Python |
| Last code update | 4 days ago | 8 days ago |
What each one is
Cypress
Cypress is a testing tool that runs automated tests against anything that runs in a web browser. Developers use it to check that their web applications behave correctly, for example by simulating user actions and verifying results. The README describes it as fast, easy and reliable, and points to documentation for details.
SeleniumBase
SeleniumBase is a Python framework for controlling web browsers. It is used to automate browser tasks, write end-to-end tests of websites, and scrape web pages. Its README says it includes a CDP Mode that launches a browser meant to get past bot-detection and CAPTCHAs, and that it can add stealth features to Playwright.
Best for
Cypress
- Developers who want automated browser tests for a web application
- Teams that already use npm, Yarn, or pnpm in their JavaScript projects
- People testing components from frameworks mentioned in the project topics, such as React, Vue, Angular, or Svelte
SeleniumBase
- Python developers writing automated browser tests for websites
- People who already use Selenium or pytest and want a higher-level API
- Developers building scrapers for sites that block standard automated browsers
- Teams wanting an MCP server so AI agents can drive a browser
Strengths
Cypress
- Installs with a standard package manager command (npm, Yarn, or pnpm)
- Open source under the permissive MIT license
- Large, actively maintained project with a published documentation site
SeleniumBase
- Built on Python and pytest, so it fits into common Python testing workflows
- Includes many features in one package, such as a recorder, dashboard, and reports, per the README keywords
- Uses the MIT license, which permits free use and modification
Not ideal for
Cypress
- Non-developers looking for a no-code testing tool; the README assumes installing packages via a JavaScript package manager
- Projects that need to test native mobile apps; the README only describes browser-based testing
SeleniumBase
- Non-programmers looking for a no-code tool, since it requires writing Python
- Anyone needing a guaranteed way around bot-detection or CAPTCHAs, since the README makes claims about bypassing them without guarantees and sites change their defenses
- Projects requiring a non-Python language, since the primary language is Python
Trade-offs
Cypress
- The README is short on technical detail, so specifics must be checked in the official documentation
- Some features, such as the Cypress Cloud integration, are tied to a commercial hosted service
- Requires a JavaScript-based project setup to be most useful
SeleniumBase
- Bypass claims for bot-detection and CAPTCHAs are stated by the project and are not independently verified in this README
- Stealth and anti-bot features depend on ongoing maintenance as target sites change
- The README is long and links out to many separate docs, so the full scope takes effort to learn
Getting started
Cypress
Install with npm (dev dependency)
npm install cypress --save-devInstall with Yarn
yarn add cypress --devFrequently asked questions
What is the difference between Cypress and SeleniumBase?
Cypress: A JavaScript tool for automated end-to-end and component testing of web apps in a browser. SeleniumBase: Python framework for browser automation, testing, and scraping, with optional stealth browser features. Cypress suits developers who want automated browser tests for a web application, while SeleniumBase suits python developers writing automated browser tests for websites.
Are Cypress and SeleniumBase free?
Cypress: Free and open source. SeleniumBase: Free and open source.
Which is easier to set up, Cypress or SeleniumBase?
Cypress is easier to get started with (rated beginner); SeleniumBase is rated intermediate and usually needs more setup.
Is Cypress or SeleniumBase more popular?
Cypress has more GitHub stars (51k) than SeleniumBase (13.2k). Popularity isn't the same as fit — check which one matches your use case above.
What are other alternatives to Cypress and SeleniumBase?
Other options people compare them with include Nx, Nightwatch.js, CloakBrowser, Mockito, Detox.
Keep comparing
Built from our catalogue entries for both products: open-source details come from each project's README (AI-assisted, refreshed weekly) and GitHub data; AI-tool details are editorial. Spotted something wrong? Let us know from either product's page.