EventMachine has been used to build a number of different libraries and frameworks in which concurrency is a performance concern. Some examples include:2
"The Ruby Toolbox - Concurrent Processing". Retrieved September 27, 2012. https://www.ruby-toolbox.com/categories/Concurrent_Processing ↩
"EventMachine README". GitHub. Retrieved September 27, 2012. https://github.com/eventmachine/eventmachine/blob/b79d508532e210084a7fcda31f330a8a81bf78aa/README.md ↩