Cosmic Ray vs LittleDarwin
| Cosmic Ray | LittleDarwin | |
|---|---|---|
| Free plan | No | No |
| Free trial | No | No |
| Paid from | — | — |
| Open source | No | No |
| Platforms | Linux, self-hosted | — |
| Free plan | Yes | Yes |
| Supported languages | Python 3 | Java |
| Test frameworks | unittest, pytest, nose | — |
| Incremental analysis | Yes | — |
| Parallel execution | 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 | AOR-B, AOR-S, AOR-U, LOR, SOR, ROR, COR, COD, SAOR; NullifyInputVariable, NullifyReturnValue, NullifyObjectInitialization, RemoveNullCheck |
Both are listed in Best Mutation Testing Tools. On Everything Xiaomi, Cosmic Ray scores higher on our published basis.