OPEN-XCHANGE™ is a collaboration and integration server enviroment with a continuous right management for modules and objects. The product is based on existing components like a web server, mail server, directory server, database ...
Kyzis is a vim-like editor fully rewritten from scratch based on the yzis framework. It already features multibuffer, syntax highlighting, basic vim commands.
Yzis also comes with a nice console mode application.