BddDotNet vs Karate

BddDotNet is an open-source behavior-driven development framework for C# and .NET. It supports scenarios written in Gherkin or assembled in C# through a builder pattern. Its Gherkin source generator compiles feature files and registers steps; step arguments can use C# expressions, and table arguments can be converted into C# models. The framework uses Microsoft.Testing.Platform and is based on Microsoft.Extensions.*. The project says it supports .NET 10+ runtimes and is suited to Native AOT deployment and trimming. Public interfaces and dependency injection provide extension points, while additional features are available in separate NuGet packages. To add it to a .NET project, install BddDotNet and its Gherkin source generator as NuGet packages. Setup examples use a console application created with Visual Studio or the .NET CLI, and a GitHub wiki provides setup and feature documentation. It runs locally on Linux, macOS, and Windows. BddDotNet is free under the MIT license, whose terms permit use, modification, distribution, and sublicensing; the software is provided without warranty.

Karate is a testing framework for API, UI, mock, and performance work. Its MIT-licensed core is free for commercial projects and supports REST, GraphQL, and SOAP testing, with JSON and XML assertions and schema validation. It can automate browsers and desktop apps, and combine UI and API steps in one test. Built-in Gatling integration lets teams reuse API tests for performance testing. The Free plan costs nothing and includes community support. Paid plans include IDE Plus at $100 a year, Xplorer Premium at $200 a year, and Pro at $640 a year; Pro adds IDE plugins, debugging, enhanced autocomplete, development async protocol testing, and priority email support. The platform lists integrations including AWS, Google Cloud, Azure, Jenkins, GitHub Actions, Maven, Gradle, Docker, IntelliJ, VS Code, and Gatling. Enterprise async protocol testing covers Kafka, gRPC, and WebSocket, but production CI/CD execution requires an Enterprise runtime license. Platforms include API, extension, Linux, macOS, self-hosted, and Windows.