npm94Exceptionalhealth index
TypeScript★ 260↓ 967.6K/moOct 12, 2026
PyPI94Exceptionalhealth index
Python★ 5,121Sep 17, 2026
npm94Exceptionalhealth index
TypeScript★ 2,844↓ 17.2M/moAug 27, 2026
npm93Exceptionalhealth index
JavaScript★ 9,758↓ 45.1M/moSep 18, 2026
npm89Excellenthealth index
TypeScript★ 8↓ 5,448/moSep 15, 2026
npm88Excellenthealth index

hayes/pothosPothos GraphQL is library for creating GraphQL schemas in typescript using a strongly typed code first approach
TypeScript★ 2,615↓ 3.1M/moSep 16, 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
Packagist88Excellenthealth index
PHP★ 165↓ 67.4K/moSep 9, 2026
NuGet · PyPI87Excellenthealth index
C#★ 649Oct 6, 2026
npm83Excellenthealth index

mhassan1/redis-memory-serverRedis Server for testing. The server will allow you to connect your favorite client library to the Redis Server and run parallel integration tests isolated from each other.
TypeScript★ 131↓ 955.9K/moSep 6, 2026
npm80Excellenthealth index
JavaScript · TypeScript★ 771↓ 9.5M/moAug 27, 2026
crates.io · RubyGems77Goodhealth index
Rust · Shell★ 2↓ 91/moSep 10, 2026
Go★ 1Sep 20, 2026
Elixir★ 579↓ 190.9K/moSep 12, 2026

iamdmitrij/TethosLibrary which allows to seamlessly mock dependencies for unit tests 🔬
C#★ 3Sep 26, 2026
Python · Shell★ 1,817↓ 16.3K/moOct 20, 2026

k1LoW/httpstubhttpstub provides router ( http.Handler ), server ( *httptest.Server ) and client ( *http.Client ) for stubbing, for testing in Go.
Go★ 14Oct 21, 2026
Packagist65Goodhealth index
PHP★ 57↓ 2,268/moAug 26, 2026
Packagist65Goodhealth index

kahlan/kahlan:heavy_check_mark: PHP Test Framework for Freedom, Truth, and Justice
PHP★ 1,148↓ 19.4K/moSep 12, 2026

k1LoW/grpcstubgrpcstub provides gRPC server and client conn ( *grpc.ClientConn ) for stubbing, for testing in Go.
Go★ 12Sep 19, 2026
Packagist63Moderatehealth index
PHP★ 8,465↓ 3.5M/moOct 20, 2026
RubyGems62Moderatehealth index
Ruby★ 1,284Sep 12, 2026
npm59Moderatehealth index

achird-labs/rift-nodeOfficial Node.js/TypeScript SDK for Rift — typed mocking DSL, embedded (koffi FFI) + remote + spawn transports, Vitest/Jest testkit
TypeScript★ 0↓ 705/moSep 14, 2026
npm59Moderatehealth index
JavaScript★ 67↓ 51.3K/moSep 16, 2026
Packagist53Moderatehealth index
PHP★ 173↓ 267.3K/moSep 14, 2026
Packagist50Moderatehealth index
PHP★ 371↓ 607K/moSep 18, 2026
npm · Maven48Weakhealth index
Java · TypeScript★ 0↓ 802/moSep 14, 2026
Packagist39Weakhealth index
PHP★ 14↓ 322.1K/moSep 18, 2026

rasuvaeff/understudyTest doubles for PHP 8.3–8.5 with a call-closure API, matchers, expectations, sequences, verification, and Testo/PHPUnit/Psalm/PHPStan adapters.
PHP★ 0↓ 3,412/moOct 21, 2026

rasuvaeff/understudy-testoTesto adapter for the understudy test double library: automatic verification and cleanup after every test
PHP★ 0↓ 2,471/moSep 18, 2026