Fast, easy and reliable testing for anything that runs in a browser.

The Ruby Spec Suite aka ruby/spec

SSL and TLS protocol test suite and fuzzer

DARPA Challenges Sets for Linux, Windows, and macOS

🔎 Automated mutation testing for Swift 🕳️

Extremely flexible golang deep comparison, extends the go testing package, tests HTTP APIs and provides tests suite

A collection of ROM images with tests that will aid you in developing your own CHIP-8, SUPER-CHIP or XO-CHIP interpreter (or "emulator")

Comprehensive, language independent Test Suite for YAML

Behavior specification for Gavel, validator of HTTP transactions

Revision control stress tests

TLS-Anvil, a fully automated TLS testsuite for client and servers.

Comparison of the different implementations of JSONPath and language agnostic test suite.

A test suite for QUIC

A tool for Model Based Testing

A tool to ping your site with a variety of real world WebMentions

The Crystal Programming Language Koans

Semi-automated conformance checking for IRC implementations (RFC1459/RFC2812, the "modern spec" by ircdocs, and IRCv3)

A collection of Fortran compiler bug examples and tests

Micropub test suite and debugging utility

An extension of Deno's built-in test runner to add setup/teardown hooks and make it easier to organize tests in a format similar to Jasmine, Jest, and Mocha.