Selenium WebDriver vs mabl

Free and open source

Quote on request

Free and open source. The real cost is grid infrastructure or a device-cloud subscription.

Quote-based, typically sold as an annual contract sized by test runs and users. Expect mid five figures for a team deployment.

Everything, self-hosted

14-day free trial.

Category standard

Software Freedom Conservancy · since 2004

Established

mabl · since 2018

• The widest language and browser support of anything in the category, including legacy browser versions.
• A W3C standard, so it will outlive any single vendor. Skills transfer between employers.
• Every device cloud speaks Selenium, which keeps you portable between vendors.

• Self-healing genuinely reduces maintenance on UIs that change often.
• Auto-captured visual, performance and accessibility signals on every run without extra setup.
• Very little infrastructure to own — no grid, no runners.

• No built-in waiting strategy, reporting, parallelism or assertions — expect to assemble and maintain a framework around it.
• Explicit waits are your problem, and getting them wrong is the number one source of flake in real Selenium suites.
• Out-of-process communication makes it slower than Playwright or Cypress.

• Cloud-only. If your application is not reachable from mabl's infrastructure, the setup gets complicated.
• Complex conditional logic hits the ceiling of the low-code model.
• Opaque pricing and a substantial minimum commitment.

Enterprises with polyglot teams, legacy browser requirements, or an existing grid investment.

Mid-market teams that want broad automated coverage without hiring an automation team.