Mutant
6.7#3 in mutation testing toolsFrom $250 a yearFree planLinuxmacOS
VisitMutant vs Mutineer
What both publish
| Fact | Mutant | Mutineer |
|---|---|---|
| Purpose | Mutant is mutation testing for Ruby that systematically modifies code and verifies that tests catch each change. | Mutineer is a mutation testing framework for JavaScript and TypeScript that changes source code and runs existing tests to reveal defects the tests miss. |
Mutant plans
- Open sourceFree
- Commercial monthly$30 a month
- Commercial yearly$250 a year
- EnterprisePriced on request
Mutineer plans
No prices published.
Pick Mutant if…
Mutant suits Ruby developers who want to check whether their tests detect code changes, including teams using the listed test frameworks or supported Rails versions. Its open-source plan is for public repositories; commercial use requires a per-developer subscription.
Pick Mutineer if…
Mutineer suits JavaScript or TypeScript teams using Vitest, Jest, or an adaptable test runner. It is useful when teams need scoped, incremental mutation analysis and quality-gate reporting.