An extensible desktop mail app built on the modern web
Nylas Mail is an open-source mail client built on the modern web with Electron, React, and Flux. It was designed to be easy to extend, and many third-party plugins are available that add functionality to the client. See /packages for the separate pieces. Each folder in /packages is designed to be its own stand-alone repository. They are all bundled here for the ease of source control management. In early 2016, the Nylas Mail team wrote extensive documentation for the app that was intended...
OpenSubsystems is set of business components such as security, search, inventorymanagement, able to run on various J2EE servers or just using JVM thanks to unique middleware abstraction layer and repository of common application functionality patterns