Zero-friction setup
No changes to your code, tests, or build system. Just add a few compiler flags and you’re done.
Fault injection for C and C++
Find gaps in your test suite through mutation testing. If your tests don't catch it, Mull will.
Mutation testing done right
Built for C and C++ teams that take correctness seriously.
Extremely fast
Run on every commit, not just nightly. Mull is fast enough to make mutation testing part of your regular workflow.
CI-native
Git-aware scoping, build failures on regressions, GitHub annotations, and rich reports. Mutation testing as a first-class CI citizen.
Safety-critical ready
ISO 26262 and IEC 61508 explicitly recommend mutation testing. EN 50128 and DO-178C require robustness testing that fault injection directly satisfies.