Alba is a JSON serializer for Ruby
Guard is a command line tool to easily handle events on file system
The official AWS X-Ray Recorder SDK for Ruby
A Ruby/Rack web server built for concurrency
Prometheus instrumentation library for JVM applications
Ruby ODM framework for MongoDB
Ruby library for creating background jobs and processing them
Computation and Visualization environment
Marathon supports testing of Java/Swing and Java/Fx applications.
An API for asynchronous programming with observable streams
Scientific Computation and Visualization Environment