Top 3 bdd-style open source projects

A very extensive set of extension methods that allow you to more naturally specify the expected outcome of a TDD or BDD-style unit tests. Targets .NET Framework 4.7, .NET Core 2.1 and 3.0, as well as .NET Standard 2.0 and 2.1. Supports the unit test frameworks MSTest2, NUnit3, XUnit2, MSpec, and NSpec3.

Supercharged End 2 End Testing Framework for NodeJS

A behaviour driven development (BDD) library for Clojure. Simplicity is key.