Feature checklists rarely decide anything. What decides it is the pricing metric, who has to write the tests, and which limitation you can live with.
Entry price
Free and open source
Open sourceQuote on request
Quote onlyWhat drives the bill
The metric that actually scales your invoice.
Free and open source. Microsoft also sells a hosted parallel-runner service; the library itself has no paid tier.
Quote-based, typically sold as an annual contract sized by test runs and users. Expect mid five figures for a team deployment.
Free tier
Everything, self-hosted
14-day free trial.
Open source
Apache-2.0
Self-hostable
No-code authoring
Languages
Platforms
Fits teams
Adoption
Category standard
Microsoft · since 2020
Established
mabl · since 2018
Strengths
Limitations
Best for
Teams that write their own tests and want the lowest-flake open-source option available.
Mid-market teams that want broad automated coverage without hiring an automation team.
All of these integrate with: Jenkins, Azure DevOps.
Pricing last reviewed August 2026 and is indicative only — confirm on each vendor’s own page.