I'm building a regression suite for login checkout and forms and need to know whether Playwright Cypress or Selenium is the best fit

For a regression suite covering login, checkout, and forms, the best fit is usually Playwright.

Short answer

• Best overall: Playwright
• Best if your team already uses it heavily and wants a familiar JS testing style: Cypress
• Best for legacy browser/grid needs or multi-language/enterprise setups: Selenium

Why Playwright is usually the best fit

Playwright tends to be strongest for end-to-end regression because it gives you:

• Reliable auto-waiting for elements and navigation
• Cross-browser support: Chromium, Firefox, WebKit
• Good handling of modern web apps, SPAs, dynamic forms, iframes, popups
• Strong parallelization and test isolation
• Excellent authentication workflows via storage state reuse
• Great debugging tools like trace viewer, screenshots, video, and codegen

For login/checkout/forms, those features matter a lot because these flows often involve:

• redirects
• async loading
• validation timing
• modal dialogs
• third-party payment or auth steps

When Cypress might be a better fit

Choose Cypress if:

• your team is already productive in Cypress
• you want a very nice developer experience inside the browser
• your app is mainly a modern web app and you don’t need broader browser/OS-level flexibility
• you prefer the Cypress ecosystem and syntax

Cypress is solid, but it can be more limiting for certain multi-tab, multi-window, and cross-origin scenarios compared with Playwright.

When Selenium is the best fit

Choose Selenium if:

• you need Java, Python, C#, Ruby, etc. support across a larger org
• you already have a Selenium Grid or vendor infrastructure
• you need broad compatibility with legacy systems and enterprise tooling
• you’re maintaining an existing Selenium suite

Selenium is still very relevant, but for new regression suites, it usually requires more setup and more waiting/maintenance than Playwright.

Recommendation by scenario

Pick Playwright if:

• you’re starting fresh
• you want the most stable and modern E2E regression tool
• your flows include login/checkout/forms and need reliable waits and cross-browser testing

Pick Cypress if:

• your team is already invested in it
• you want easy authoring and a strong UI testing workflow
• your test cases are mostly single-page app style flows

Pick Selenium if:

• you need enterprise browser infrastructure
• you need language flexibility
• you’re integrating into an existing automation stack

Bottom line

If you’re building a new regression suite for login, checkout, and forms, I’d recommend Playwright unless you have a strong existing reason to standardize on Cypress or Selenium.

If you want, I can also give you a decision matrix or a sample test architecture for Playwright/Cypress/Selenium for these flows.