Cosmic Ray vs MuJava
| Cosmic Ray | MuJava | |
|---|---|---|
| Free plan | No | No |
| Free trial | No | No |
| Paid from | — | — |
| Open source | No | No |
| Platforms | Linux, self-hosted | Windows, Linux |
| Free plan | Yes | Yes |
| Supported languages | Python 3 | Java |
| Test frameworks | unittest, pytest, nose | JUnit |
| Incremental analysis | Yes | — |
| Parallel execution | Yes | — |
| Surviving mutant reports | 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 | Class-level: AMC, IHD, IHI, IOD, IOP, IOR, ISI, ISD, IPC, PNC, PMD, PPD, PCI, PCC, PCD, PRV, OMR, OMD, OAC, JTI, JTD, JSI, JSD, JID, JDC, EOA, EOC, EAM, EMM. Method-level: AOR, AOI, AOD, ROR, COR, COI, COD, SOR, LOR, LOI, LOD, ASR, SDL, VDL, CDL, ODL. |
Both are listed in Best Mutation Testing Tools. On Specifiction, Cosmic Ray scores higher on our published basis.