Grape is an REST-like API framework for Ruby. It's designed to run on Rack or complement existing web application frameworks such as Rails and Sinatra by providing a simple DSL to easily develop RESTful APIs. Developed by UberGrape GmbH
License: Commercial
Flowdock is a more feature-rich communication tool with a focus on integrations and real-time messaging, making it suitable for larger teams that need structured conversations. Grape, on the other hand, is lightweight and user-friendly, ideal for smaller teams looking for straightforward communication without the complexity.