Stryker.NET

Repository: stryker-mutator/stryker-net Homepage

Metrics as of 2026-09-22, from the GitHub or GitLab API of each repository. Refreshed monthly.

What Stryker.NET is

Stryker.NET is a mutation testing tool for .NET Core and .NET Framework projects. It tests a test suite by temporarily inserting bugs into the source code. Minimum target versions are .NET Core 1.1, .NET Framework 4.5 and .NET Standard 1.3. It installs as a global dotnet tool. Runs start with the dotnet stryker command inside a unit test project folder. The documentation covers configuration, supported mutations, reporters and migration between versions. Separate Stryker projects cover JavaScript, TypeScript and Scala.

Written from the project's README, read 2026-09-22.

Category: Code quality and static analysis
License: Apache-2.0
Language: C#
Changelog: Releases on GitHub

Repository metrics

Repository metrics
Stars	2,086¹
Forks	245¹
Open issues and PRs	190¹
Contributors	153¹
Commits in the last 90 days	126¹
Last commit	2026-09-22¹
Last release	dotnet-stryker@5.0.0, 2026-09-11¹
Fetched	2026-09-22

¹ Fetched from the GitHub or GitLab API on 2026-09-22. Hover a value for its own date.

Status

activeLast commit within 90 days of the fetch date.

Computed from the last commit date and the archive flag on the fetch date. See the status rules.

Alternatives

Listed code quality and static analysis tools, same primary language first, then by GitHub stars. Each line gives one fact from the tool's documentation where it differs from Stryker.NET's, with its source.

Ruff: Languages or files analysed: Python files (*.py, *.pyi), Jupyter Notebooks (*.ipynb) and pyproject.toml. source: Docs: Configuring Ruff
ShellCheck: Languages or files analysed: Shell scripts in the sh, bash, dash, ksh and BusyBox dialects. source: Docs: shellcheck(1) manual
ESLint: Languages or files analysed: ECMAScript/JavaScript code; JSX parsing when enabled. source: README
mypy: Languages or files analysed: Python programs with type hints. source: README
golangci-lint: Languages or files analysed: Go code. source: README
Semgrep: Languages or files analysed: Community supported in Semgrep CE: C/C++, C#, Go, Java, JavaScript, TypeScript, Kotlin, Python, Ruby, Rust, PHP, Scala, Swift, Terraform. source: Docs: Supported languages for Semgrep Community Edition (CE)
Infer: Languages or files analysed: Java, C++, Objective-C and C. source: README
PHPStan: Languages or files analysed: PHP code. source: README

How to install

dotnet tool install -g dotnet-stryker

From README, read 2026-09-22.

Questions

Is Stryker.NET open source?

Yes. Stryker.NET is released under Apache-2.0, an OSI-approved license, as reported by the GitHub API on 2026-09-22.

Is Stryker.NET maintained?

On 2026-09-22, the last commit to the default branch was on 2026-09-22, so the listed status is active. Rule: Last commit within 90 days of the fetch date.

How many GitHub stars does Stryker.NET have?

2,086 stars on 2026-09-22, from the GitHub API. The number is refreshed at each monthly update.

What language is Stryker.NET written in?

The repository's primary language, as reported by the GitHub API, is C#.

How do I install Stryker.NET?

The README gives this command: dotnet tool install -g dotnet-stryker

Sources

GitHub REST API: repository, read 2026-09-22
GitHub REST API: commits, read 2026-09-22
GitHub REST API: latest release, read 2026-09-22
GitHub REST API: contributors, read 2026-09-22
README, read 2026-09-22