+ - [Postfix](http://www.postfix.org/)
+ - [Mailman](http://www.list.org/)
+ - [Schleuder](https://schleuder.nadir.org/)
+ - [SpamAssassin](http://www.spamassassin.org/)
+ - [BIND](https://www.isc.org/software/bind/)
+ - [Apache](http://httpd.apache.org/)
+ - [Ikiwiki](http://ikiwiki.info/)
+ - [Git](http://git-scm.com/)
+ - [Keyringer](https://keyringer.sarava.org/)
+ - *et encore de nombreux autres…*