Blue Smiley Organizer is a Web-based script to manage your bookmarks, diary, reminders, to-do lists, contacts, knowledge, and file upload in a multi-user environment. It also includes its own live support help system, blogs, RSS feeds, customizable themes, and a discussion forum.
Brim is a Web based information manager which manages bookmarks, agenda/calendar, contacts, tasks, notes, passwords, collections, and more. Brim is based on an MVC framework that uses items with a potential hierarchical relation as its base. It supports multiple themes, an unlimited number of items/folders, and has over 15 translations.
adx is a minimalistic but massively Web-enabled address book that runs completely in your Web browser. It's OS-independent and supports comprehensive details for each contact entry, including user identifiers and profiles for Skype, Twitter, Flickr, Delicious, Facebook, LinkedIn, studiVZ, instant messengers, etc. It supports the hCard and XFN microformats.
XFMail is an X11 application for receiving electronic mail. It implements most of its email functionality internally so that it does not depend on a lot of extra packages. It supports POP3, MBOX, IMAP4, sendmail, and SMTP. It has built-in support for interfacing with PGP, GPG, ispell/aspell, faces, LDAP, and esound. It runs on most Unix variants.
Csv2vcard is a program for converting CSV (comma separated values, as exported by software such as MS Outlook) files containing contact information to the industry standard vcard format, which can be imported by most mailers and PIM software (optimized for Evolution). It's based on a Perl script by Michael MacDonald of Ximian. Csv2vcard can be used to convert any CSV format, not just the English Outlook output.
Akeni Instant Messaging Server Pro is a client/server instant messaging platform that allows companies to host their own secured private IM system. The client has an user interface similar to AIM, ICQ, or MSN Messenger. It supports all the standard IM features such as chat, group conference, presence management, file transfer, offline messages, and emergency alert/notification. Extra features include contact management and optional tabbed chat sessions. The server has advanced administration tools for managing user accounts, client-side logging capabilities, and peer-to-peer file transfers. It can be set up on a private network without connecting to the Internet, and can easily be set up for use inside and outside of the company firewall.
AtMail is a webmail client. The project aims to provide an elegant client for existing IMAP mailservers, with less bloat and a focus on an intuitive, simple user interface. Features include complete Webmail functionality, address-book support, video mail, an AJAX interface, drag'n'drop, and more.
Webtop is a Web-based POP3 email client that includes SSL encryption, Mozilla support, many email filter options, spam fighting features, custom folders, email import/export, fast searching, undeliverable email bounce, intelligent read receipts, and email-to-PDF generation. The Webtop also includes a calendar, notepad, online file storage, automated email reminders, contacts, mailing lists, and Web-based administration. One installation can support multiple users and each user can set up as many POP3 accounts as they need.