If you are looking for Roundcube plugins, please refer to:
Official Roundcube Site (http://trac.roundcube.net/wiki/Plugin_Repository)
Cor Bosman (http://underwa.ter.net/roundcube-plugins/)
JohnDoh (http://www.tehinterweb.co.uk/roundcube/)
MyRoundcube (http://myroundcube.com) [Contribute us with translations (http://mirror.mail4us.net/translator)!] Thanks!
Axel Sjostedt (http://axel.sjostedt.no/misc/dev/roundcube/)
Vladimir Minakov (https://github.com/namesco/Roundcube-Plugin-Recipient-To-Contact)
Add checkbox (https://github.com/umount/rcplugin_chbox) Denis Sobolev (slightly modified plugin is included into MyRoundcube plugins bundle)
Roundcube bounce (https://github.com/umount/rcplugin_bounce/blob/master/bounce.php) Denis Sobolev (http://trac.roundcube.net/ticket/1485774 (http://trac.roundcube.net/ticket/1485774))
lacri's plugins (https://github.com/lacritima/)
Favicon icon according to remote server (http://www.nomadcf.com/roundcubemail/favicon/)
Sync your contacts with your Google Addressbook by deltatech (Roundcube 0.6 !!!) (http://sourceforge.net/projects/roundcubegoogle/files/)
Thunderbird labels (http://code.google.com/p/rcmail-thunderbird-labels/)
Mark message buttons (http://github.com/xrxca/markbuttons/downloads)
Qmail Admin (password, vacation) (http://www.davidc.net/miscellany/qmailadmin-plugin-roundcube)
CardDAV-Plugin (Roundcube 0.6) - by Christian Putzke (https://github.com/graviox/Roundcube-CardDAV)
Persistent Login by insanefactory.com (http://www.insanefactory.com/roundcube-persistent-login-plugin/) (Replacement of remember_me plugin)
Lazlo's Planner - a hybrid between Calendar and ToDo's (http://www.roundcubeforum.net/index.php/topic,9207.0.html)
Forward to manage PostfixAdmin database alias to set email forwards of user's address (https://github.com/gianlucagiacometti/roundcube-forward)
Aliases to manage PostfixAdmin database alias to set email aliases for user's address (https://github.com/gianlucagiacometti/roundcube-aliases)
Re-captcha implementation (https://github.com/dennylin93/rcguard)
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