Appveyor vs. Test Kitchen vs. Strider

AppVeyor aims to give powerful Continuous Integration and Deployment tools to every .NET developer without the hassle of setting up and maintaining their own build server.

Test Kitchen has a static, declarative configuration in a .kitchen.yml file at the root of your project. It is designed to execute isolated code run in pristine environments ensuring that no prior state exists. A plugin architecture gives you the freedom to run your code on any cloud, virtualization, or bare metal resources and allows you to write acceptance criteria in whatever framework you desire.

Strider is an Open Source Continuous Deployment / Continuous Integration platform. It is written in Node.JS / JavaScript and uses MongoDB as a backing store. It is published under the BSD license.