1.floci-io / floci
Light, fluffy, and always free - The AWS Local Emulator alternative
+2,440 stars
from 26,308 · score 7.80
Trending repositories
Ranked by Attention Score: stars gained over the last 30 complete days
17 repositories by Attention Score · Oct 5, 2026 – Nov 3, 2026 (UTC)
2.keploy / keploy
Open-source platform for creating safe, isolated production sandboxes for API, integration, and E2E testing.
- testing
- test-automation
- api-testing
- testing-tools
- test-automation-framework
- test-generation
- +8 more
+806 stars
from 18,474 · score 6.69
3.axllent / mailpit
An email and SMTP testing tool with API for developers
- email-testing
- go
- golang
- smtp-server
- smtp-relay
- smtp-testing
- +2 more
+301 stars
from 10,523 · score 5.71
4.google / googletest
GoogleTest - Google Testing and Mocking Framework
+138 stars
from 39,562 · score 4.93
5.mswjs / msw
The industry standard for API mocking in JavaScript.
+84 stars
from 18,246 · score 4.44
6.typicode / json-server
Get a full fake REST API with zero coding in less than 30 seconds (seriously)
+63 stars
from 75,671 · score 4.16
7.stretchr / testify
A toolkit with common assertions and mocks that plays nicely with the standard library
+48 stars
from 26,194 · score 3.89
8.getmoto / moto
A library that allows you to easily mock out tests based on AWS infrastructure.
+45 stars
from 8,688 · score 3.83
9.mockoon / mockoon
Mockoon is the easiest and quickest way to run mock APIs locally. No remote deployment, no account required, open source.
+43 stars
from 8,425 · score 3.78
+39 stars
from 16,161 · score 3.69
11.karatelabs / karate
Test Automation Made Simple
- test-automation
- assertions
- testing-tools
- mock-server
- automated-testing
- webdriver
- +10 more
+34 stars
from 8,970 · score 3.56
12.nock / nock
HTTP server mocking and expectations library for Node.js
+11 stars
from 13,124 · score 2.48
13.Netflix / pollyjs
Record, Replay, and Stub HTTP Interactions.
+11 stars
from 10,240 · score 2.48
14.mockito / mockito
Most popular Mocking framework for unit tests written in Java
- mockito
- java
- mocking-framework
- testing-tools
- mocking
- mock
- +6 more
+9 stars
from 15,440 · score 2.30
15.YMFE / yapi
TranslatedYApi is a visual API management platform that can be deployed locally and connects front-end, back-end, and QA
- api
- api-manager
- api-management
- api-test
+5 stars
from 27,694 · score 1.79
16.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).
+4 stars
from 10,720 · score 1.61
17.sinonjs / sinon
Test spies, stubs and mocks for JavaScript.
- stubs
- javascript
- tdd
- test-driven-development
- unit-testing
- sinon
- +2 more
+3 stars
from 9,749 · score 1.39