Mutant
6.7#3 in mutation testing toolsFrom $250 a yearFree planLinuxmacOS
VisitMutant vs Muter
What both publish
| Fact | Mutant | Muter |
|---|---|---|
| Mutation operators | Mutant mutates arithmetic, logical and bitwise operators, removes statements, and modifies return values. | The documented operators are RelationalOperatorReplacement, RemoveSideEffects, ChangeLogicalConnector, and SwapTernary. |
| Purpose | Mutant is mutation testing for Ruby that systematically modifies code and verifies that tests catch each change. | Muter is a mutation testing utility for assessing the quality of Swift test suites. |
Mutant plans
- Open sourceFree
- Commercial monthly$30 a month
- Commercial yearly$250 a year
- EnterprisePriced on request
Muter plans
- Open-source MuterFree
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 Muter if…
Muter suits Swift developers using Xcode test targets or Swift Package Manager tests who want to assess how their test suite responds to code changes. The utility runs on macOS 10.15 or later.