npm
stoplightio/prism
Turn any OpenAPI2/3 and Postman Collection file into an API server with mocking, transformations and validations.
Apache-2.0Aug 27, 2026 · metrics 2.10.0
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Catalogue tag
#mocking
Every repository in the public record carrying this tag — from its GitHub topics or the keywords its package registries publish. Health is measured under the same versioned methodology as the rest of the record.
72 records
npm
mockoon/mockoon
Mockoon is the easiest and quickest way to run mock APIs locally. No remote deployment, no account required, open source.
MITSep 7, 2026 · metrics 2.10.0
Go · PyPI
SpectoLabs/hoverfly
Lightweight service virtualization/ API simulation / API mocking tool for developers and testers
Apache-2.0Oct 19, 2026 · metrics 2.10.0
NuGet
dotnet/dev-proxy
Simulate API failures, throttling, and chaos — all from your command line.
MITSep 16, 2026 · metrics 2.10.0
PyPI
pytest-dev/pyfakefs
Provides a fake file system that mocks the Python file system modules.
Apache-2.0Aug 27, 2026 · metrics 2.10.0
Go
stretchr/testify
A toolkit with common assertions and mocks that plays nicely with the standard library
MITSep 16, 2026 · metrics 2.10.0
NuGet
wiremock/WireMock.Net
WireMock.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/.
Apache-2.0Sep 11, 2026 · metrics 2.10.0
PyPI
kevin1024/vcrpy
Automatically mock your HTTP interactions to simplify and speed up testing
MITSep 9, 2026 · metrics 2.10.0
NuGet
microcks/microcks-testcontainers-dotnet
.NET lib for Testcontainers that enables embedding Microcks into your unit tests with lightweight, throwaway instance thanks to containers.
Apache-2.0Sep 11, 2026 · metrics 2.10.0
Maven
mockito/mockito
Most popular Mocking framework for unit tests written in Java
MITSep 16, 2026 · metrics 2.10.0
—
pester/Pester
Pester is the ubiquitous test and mock framework for PowerShell.
Custom licenseSep 10, 2026 · metrics 2.10.0
Go · PyPI
vektra/mockery
A mock code autogenerator for Go
BSD-3-ClauseSep 15, 2026 · metrics 2.10.0
npm
mswjs/msw
Industry standard API mocking for JavaScript.
MITSep 16, 2026 · metrics 2.10.0
RubyGems
ThrowTheSwitch/Ceedling
Unit testing and build system for C projects
MITSep 13, 2026 · metrics 2.10.0
npm
help-me-mom/ng-mocks
Angular testing library for mocking components, directives, pipes, services and facilitating TestBed setup
MITOct 19, 2026 · metrics 2.10.0
Packagist · PyPI
mockery/mockery
Mockery 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).
BSD-3-ClauseAug 27, 2026 · metrics 2.10.0
npm
zendesk/laika
Log, test, intercept and modify Apollo Client's operations
Apache-2.0Oct 11, 2026 · metrics 2.10.0
npm
kubb-labs/plugins
🧡 Official and community plugins for Kubb.
MITSep 13, 2026 · metrics 2.10.0
NuGet
nsubstitute/NSubstitute
A friendly substitute for .NET mocking libraries.
Custom licenseSep 12, 2026 · metrics 2.10.0
NuGet · PyPI
themidnightgospel/Imposter
Mocking library with the perfect balance of Performance and Intuitive API
MITOct 6, 2026 · metrics 2.10.0
NuGet · RubyGems
godot-gdunit-labs/gdUnit4
Embedded unit testing framework for Godot 4 supporting GDScript and C#. Features test-driven development, embedded test inspector, extensive assertions, mocking, scene testing.
MITSep 20, 2026 · metrics 2.10.0
—
Azure/umock-c
A pure C mocking library
MITSep 12, 2026 · metrics 2.10.0
PyPI
mindflayer/python-mocket
a socket mock framework - for all kinds of socket animals, web-clients included
BSD-3-ClauseOct 16, 2026 · metrics 2.10.0
npm
mswjs/data
Data querying library for testing JavaScript applications.
MITOct 5, 2026 · metrics 2.10.0
npm
specmatic/specmatic-node
Node wrapper for Specmatic
MITSep 12, 2026 · metrics 2.10.0
RubyGems
ThrowTheSwitch/CMock
Mock/stub generator for C
MITSep 14, 2026 · metrics 2.10.0
npm
danfry1/vitest-native
Test React Native with Vitest — against real React Native, or a fast mock. One plugin, zero config.
MITSep 16, 2026 · metrics 2.10.0
NuGet · npm · RubyGems
Kuestenlogik/Bowire
Multi-protocol API workbench for .NET — discover, invoke, record, mock, replay across gRPC, REST, GraphQL, MQTT, SignalR, WebSocket, SSE, MCP, OData, Socket.IO, and more... including your custom protocol.
Apache-2.0Sep 29, 2026 · metrics 2.10.0
PyPI
provide-io/provide-testkit
No repository description published.
Apache-2.0Sep 18, 2026 · metrics 2.10.0
crates.io
asomers/mockall
A powerful mock object library for Rust
Apache-2.0Sep 18, 2026 · metrics 2.10.0