Light, fluffy, and always free - The AWS Local Emulator alternative
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AFL++ is a state-of-the-art fuzzer, and #1 in benchmarks. It was originally based on AFL. Today it comes with qemu 5.1, collision-free coverage, enhanced laf-intel & redqueen, AFLfast++ power schedules, MOpt mutators, unicorn_mode, and a lot more!
- afl
- afl-fuzz
- afl-fuzzer
- fuzzing
Scriptable database and system performance benchmark
🚀 Kick-start your C++! A template for modern C++ projects using CMake, CI, code coverage, clang-format, reproducible dependency management and much more.
- cpp
- cmake
- template
- dependency-manager
xUnit.net is a free, open source, community-focused unit testing tool for .NET.
- unit-testing
- xunit
- c-sharp
- dotnet
Let your Python tests travel through time
📸 Delightful Swift snapshot testing.
- swift
- testing
- snapshot-testing
- screenshot-testing
A gem providing "time travel", "time freezing", and "time acceleration" capabilities, making it simple to test time-dependent code. It provides a unified method to mock Time.now, Date.today, and DateTime.now in a single call.
Boilerplate-free mocking framework for Swift!
- mock
- mockito
- cuckoo
- stub
SoapUI is a free and open source cross-platform functional testing solution for APIs and web services.
- open-source
- on-prem
- soapui-oss
A mocking and stubbing library for Ruby
- ruby
- minitest
- test-unit
- mock
Free open-source modern C++20/23 framework to create console (CLI), forms (GUI like WinForms) and unit test (xUnit) applications and libraries on Windows, macOS, Linux, iOS, Android, FreeBSD, Haiku, and SerenityOS.
:heavy_check_mark: PHP Test Framework for Freedom, Truth, and Justice
zerocode-tdd is a community-developed, free, open-source, outcome-driven automated testing framework for Data Pipelines, ETL, REST API, Kafka(Data Streams), Databases and Load scenarios. all defined in simple JSON or YAML — with zero coding.
- soap
- assertions
- java
- api
Free, open-source AWS emulator. LocalStack alternative: 107 services, 7,657 operations, true 100% Smithy conformance (258,545/258,545 variants pass). No account, no auth token, no paid tier.
Apache Spark testing helpers (dependency free & works with Scalatest, uTest, and MUnit)
A free ActionScript 3 library designed for developing 2D Flash games. It provides you with a fast, clean framework to prototype and develop your games in. This means that most of the dirty work (timestep, animation, input, and collision to name a few) is already coded for you and ready to go, giving you more time and energy to concentrate on the design and testing of your game.
An enjoyable golang test framework.
- testing
- golang
- lightweight
- dependency-free
A GitHub Action to track code coverage in your pull requests, with a beautiful HTML preview, for free.
- coverage
- coverage-report
- go
- golang
A testing library that allows "time travel," "freezing time," and "time acceleration". Inspired by the ruby-timecop library.
- testing
- timecop
- crystal
Cross-platform, heap-free C test runner with parameterized and lifecycle-aware tests.
Free sample: 42-table synthetic business dataset with double-entry accounting. AdventureWorks alternative. CSV + SQL + Parquet + SQLite. AU tax compliance (ATO/GST).
- accounting
- australia
- business-data
- csv
GitHub Action: screenshot two URLs and post a visual diff as a PR comment. Free visual regression testing.
- ci-cd
- github-actions
- puppeteer
- screenshot-diff