AldoContent is a lightweight CMS focused on usability and simplicity. It is designed for multilingual Web sites and can have sections with public and private content. It has file management, is extensible with plugins, and uses gettext for localization. Is written in PHP for a MySQL backend.
Atmail is a fully-featured email server and Webmail client, allowing users to send and receive email via a Web browser or mobile device. It has full support for IMAP mailboxes, and an optional email-server mode that uses EXIM as the MTA. Features include a scheduler, MySQL backend support, spell-check, address book, calendar user preferences, multiple accounts, SpamAssassin support, migration scripts from other mail servers, a customizable interface, an attractive AJAX interface, an optional group sharing Calendar/Addressbook, and an Outlook plugin to sync Contacts/Tasks/Calendar data between a Desktop, Mobile, and Webmail client or other email users.
Cocomore Drupal Core is an enhanced version of Drupal 6.x Core that integrates all of the speed and scalability improvements from, and adds an "Intelligent Routing" expansion of Pressflow's support for database replication, full integration into Drupal's update mechanism, more efficient cache management, and Memory Threshold and Session Starter debug tools.
GreenPants is a simple blog system. The entries are organized with categories. There is an admin panel for managing the blog. Comments on the blog must be approved before being seen by the public. The administrator can edit, delete, and create entries, categories, and emoticons. The entries and the comments are marked up with BBCode instead of HTML. It is easy to translate to another language.