SpecFlow helps teams bind automation to feature files and share the resulting examples as Living Documentation across the team and stakeholders. SpecFlow is the #1 .NET open source framework for Behavior Driven Development, Acceptance Test Driven Development and Specification by Example. With over 10m downloads on NuGet, SpecFlow is trusted by teams around the world.

SpecFlow helps teams bind automation to feature files and share the resulting examples as Living Documentation across the team and stakeholders. SpecFlow is the #1 .NET open source framework for Behavior Driven Development, Acceptance Test Driven Development and Specification by Example. With over 10m downloads on NuGet, SpecFlow is trusted by teams around the world.

SpecFlow helps teams bind automation to feature files and share the resulting examples as Living Documentation across the team and stakeholders. SpecFlow is the #1 .NET open source framework for Behavior Driven Development, Acceptance Test Driven Development and Specification by Example. With over 10m downloads on NuGet, SpecFlow is trusted by teams around the world.

SpecFlow builds on existing unit testing frameworks like NUnit and MsTest. SpecFlow+ Runner is a dedicated test runner for SpecFlow (Windows only) and integrates directly with Visual Studio. SpecFlow+ replaces general purpose testing frameworks with a dedicated solution and introduces additional features, such as enhanced test execution options and execution reports:

Easier to use: Integrates directly with Visual Studio test runner (Visual Studio 2015 or later) and TFS build
Faster test runs: Support for parallel test execution (with different isolation options) and smart execution order based on the results of previous test runs
Better feedback: Create customisable HTML execution reports for your stakeholders, or output the test results as XML or JSON for further processing
More reliable: Detect flickering scenarios
More powerful: Define your tests just once and define test targets for your various environments (x86/x64, multiple browsers) to execute them on all platforms.
More versatile: Transform configuration files to set up your tests for different environments with placeholder support
More streamlined: TFS and TeamCity build server integration