npm98Exceptionalhealth index
HTML · JavaScript★ 7,521↓ 259M/moSep 17, 2026
npm97Exceptionalhealth index
JavaScript · HTML★ 4,246↓ 2.3M/moOct 21, 2026
—96Exceptionalhealth index

microsoft/testfxThis repository holds the source code of Microsoft.Testing.Platform (MTP), a lightweight alternative to VSTest, as well as MSTest adapter and framework.
C#★ 1,044Sep 9, 2026
npm96Exceptionalhealth index

mochajs/mocha☕️ Classic, reliable, trusted test framework for Node.js and the browser
JavaScript★ 22.9K↓ 58.5M/moOct 18, 2026
RubyGems95Exceptionalhealth index

cucumber/arubaTest command-line applications with Cucumber-Ruby, RSpec or Minitest.
Ruby · Gherkin★ 966Sep 12, 2026
npm94Exceptionalhealth index

chaijs/chaiBDD / TDD assertion framework for node.js and the browser that can be paired with any testing framework.
JavaScript★ 8,267↓ 432M/moSep 16, 2026
npm94Exceptionalhealth index

dubzzz/fast-checkProperty based testing framework for JavaScript (like QuickCheck) written in TypeScript
TypeScript★ 5,144↓ 140M/moSep 17, 2026
NuGet · npm · RubyGems94Exceptionalhealth index

fluentassertions/fluentassertionsA very extensive set of extension methods that allow you to more naturally specify the expected outcome of a TDD or BDD-style unit tests. Targets .NET Framework 4.7, as well as .NET Core 2.1, .NET Core 3.0, .NET 6, .NET Standard 2.0 and 2.1. Supports the unit test frameworks MSTest2, NUnit3, XUnit2, MSpec, and NSpec3.
C#★ 3,813Oct 20, 2026
Maven94Exceptionalhealth index

http4k/http4kThe Functional toolkit for Kotlin HTTP applications. http4k provides a simple and uniform way to serve, consume, and test HTTP services.
Kotlin★ 2,792Oct 19, 2026
RubyGems · Go94Exceptionalhealth index
Ruby★ 3,090Sep 11, 2026
NuGet · npm · RubyGems93Exceptionalhealth index
C#★ 1,126Sep 9, 2026
npm · crates.io · PyPI93Exceptionalhealth index

affaan-m/ECCThe agent harness performance optimization system. Skills, instincts, memory, security, and research-first development for Claude Code, Codex, Opencode, Cursor and beyond.
JavaScript · Rust · Python★ 262.4K↓ 25.1K/moSep 19, 2026
NuGet93Exceptionalhealth index
C#★ 2,629Oct 20, 2026
npm93Exceptionalhealth index
JavaScript★ 9,758↓ 45.1M/moSep 18, 2026
NuGet92Excellenthealth index
C#★ 1,628Sep 11, 2026
Go · PyPI92Excellenthealth index
Go★ 5,972Sep 19, 2026
NuGet92Excellenthealth index

wiremock/WireMock.NetWireMock.Net is a flexible product for stubbing and mocking web HTTP responses using advanced request matching and response templating. Based on WireMock Java, but extended and different functionality. Full documentation can be found at https://wiremock.org/dotnet/.
C#★ 1,680Sep 11, 2026

pester/PesterPester is the ubiquitous test and mock framework for PowerShell.
PowerShell★ 3,332Sep 10, 2026
npm91Excellenthealth index
JavaScript · TypeScript★ 667↓ 6.7M/moSep 15, 2026
npm90Excellenthealth index
JavaScript · TypeScript★ 719↓ 40.8M/moAug 27, 2026
npm90Excellenthealth index
TypeScript · Go · MDX★ 2,178↓ 464.7K/moSep 15, 2026
npm89Excellenthealth index

Gentleman-Programming/gentle-piTurn Pi into el Gentleman: a senior-architect development harness with SDD/OpenSpec, subagents, strict TDD evidence, review guardrails, and skill discovery.
TypeScript · JavaScript★ 723↓ 9,148/moSep 10, 2026
npm89Excellenthealth index
TypeScript★ 8↓ 5,448/moSep 15, 2026
NuGet89Excellenthealth index

danielpalme/ReportGeneratorReportGenerator converts coverage reports generated by coverlet, OpenCover, dotCover, Visual Studio, NCover, Cobertura, JaCoCo, Clover, gcov or lcov into human readable reports in various formats.
C#★ 3,094Sep 11, 2026
npm89Excellenthealth index

jasmine/jasmineSimple JavaScript testing framework for browsers and node.js
JavaScript★ 15.8K↓ 21.1M/moSep 17, 2026
Maven · npm89Excellenthealth index
Kotlin★ 5,763Oct 19, 2026
Packagist · PyPI88Excellenthealth index

mockery/mockeryMockery is a simple yet flexible PHP mock object framework for use in unit testing with PHPUnit, PHPSpec or any other testing framework. Its core goal is to offer a test double framework with a succinct API capable of clearly defining all possible object operations and interactions using a human readable Domain Specific Language (DSL).
PHP★ 10.7K↓ 11.7M/moAug 27, 2026
NuGet88Excellenthealth index
C#★ 215Oct 20, 2026
NuGet88Excellenthealth index
C#★ 3,419Oct 20, 2026
NuGet87Excellenthealth index
C#★ 2,975Sep 12, 2026