Cosmic Ray vs Infection
| Cosmic Ray | Infection | |
|---|---|---|
| Free plan | No | No |
| Free trial | No | No |
| Paid from | — | — |
| Open source | No | No |
| Platforms | Linux, self-hosted | Linux, macOS, Web |
| Free plan | Yes | Yes |
| Supported languages | Python 3 | PHP |
| Test frameworks | unittest, pytest, nose | PHPUnit, PhpSpec, Codeception, Testo |
| Incremental analysis | Yes | 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 | Arithmetic, boolean, cast, conditional boundary, conditional negotiation, equality, function signature, nullify, number, operator, regex, removal, return value, visibility, and unwrap mutators |
| Mutation quality gate | — | Yes |
Both are listed in Best Mutation Testing Tools. On Samsung Mobile US Press, Infection scores higher on our published basis.