Mutation Testing Python Packages

mutmut

Mutation testing system

cosmic-ray

Mutation testing for Python

sumo-qa

Senior-QA-shaped MCP server + skills library: pre-coding QA planning, TDD scaffolding, mutation-testing follow-up, code review, test-data discovery. Iron-Law-enforced workflows for Claude Code, Cursor, Codex, OpenCode, JetBrains, VS Code + Copilot.

mutpy

MutPy is a mutation testing tool for Python 3.x source code

mutatest

Python mutation testing: test your tests! Safely run mutation trials without source code modifications and see what will get past your test suite.

ordeal

Automated chaos testing for Python — fault injection, property assertions, and stateful exploration.

universalmutator

Regexp based tool for mutating generic source code across numerous languages

muttfuzz

Fuzzing with mutants

irradiate

Fast mutation testing for Python, written in Rust

interlock-mutmut

Mutation testing system

muteria

Software Analysis and Testing Framework

poodle

Effecient Mutation Testing for Python

interlocks-mutmut

Mutation testing system

pyllmut

An LLM-driven mutant generator library for Python

cihub

Centralized CI/CD orchestration hub for multi-repository pipelines

fest-mutate

Rust cli for blazing fast mutation-testing on Python

eth-vertigo

Mutation Testing for Ethereum Smart Contracts

boggart

WIP: Lightweight, extensible, language-independent mutation testing.

llm-sentry

Unified AI Reliability Platform. One install, 12 diagnostic engines. Zero-dependency LLM pipeline monitoring.

mutahunter

Open Source, Language Agnostic Mutation Testing

django-mutpy

Django integration for the mutation testing framework MutPy.

poodle-test

Mutation Testing Tool

cosmic-ray-celery3-engine

Mutation testing for Python

cosmic-ray-nose-runner

Mutation testing for Python