Cosmic Ray vs Mutode
| Cosmic Ray | Mutode | |
|---|---|---|
| Free plan | No | No |
| Free trial | No | No |
| Paid from | — | — |
| Open source | No | No |
| Platforms | Linux, self-hosted | — |
| Free plan | Yes | — |
| Supported languages | Python 3 | JavaScript |
| Test frameworks | unittest, pytest, nose | — |
| Incremental analysis | Yes | — |
| Parallel execution | Yes | Yes |
| Surviving mutant reports | Yes | Yes |
| Mutation operators | binary operator replacement; boolean replacement; break/continue replacement; comparison operator replacement; exception replacement; keyword replacement; number replacement; decorator removal; unary operator replacement; zero-iteration for loops | boolean literals; conditional boundaries; increments; inverted negatives; math and bitwise operators; negated conditionals; numeric literals; removed array elements; removed conditionals; removed function-call arguments; removed function parameters; removed functions; removed lines; removed object properties; removed switch cases; string literals |
Both are listed in Best Mutation Testing Tools. On Samsung Mobile US Press, Cosmic Ray scores higher on our published basis.