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- ruby-grape/grape 7,527 An opinionated framework for creating REST-like APIs in Ruby.
- swagger-api/swagger-core 3,568 Examples and server integrations for generating the Swagger API Specification, which enables easy access to your REST API
- macournoyer/thin 1,839 A very fast & simple Ruby web server
- lifo/cramp 1,581 Real-time web application framework in Ruby