PWP (PWP Wiki Processor) is a Wiki written in PHP. It uses flat files as data storage, no database is required. It has a simple cache and trash bin, and can handle file uploads. It is able to export its contents into static HTML pages. A Wiki is a community/collaboration tool enabling a group of authors to create a network of linked HTML pages.
Lucane is a free groupware platform written in Java, designed with extensibility in mind. Some applications are bundled with the platform, like a peer to peer quick message service, client/server and peer to peer file sharing, shared drawing, multi-user chat, audioconf, forums, a shared calendar, and more. The platform as a whole provides easy development for your networked applications with an object based network protocol, client/server and peer to peer integration, user and groups management, internationalization, and more.
phlyMail is a groupware, webmailer, and PIM. It offers unlimited nested groups, unlimited POP3/IMAP profiles, quotas, an integrated address book, a calendar with multiple reminders and event repetitions, a file manager with an integrated WebDAV server, the ability to send faxes, SMS support (which lets you send SMS, get reminded of events via SMS, and get email notification via SMS), a bookmark manager, themes, and multilingual support. It uses either sendmail or SMTP to send email, and can handle MIME and SSL connections. Support for IDN (Internationalized Domain Names) is included. Through its modular design, it's easy to add completely new features as modules, which can be plugged into the system.
Copper is a Web-based project management software tool designed to help creative teams manage clients, projects, tasks, files, budgets, and events. It has an HTML/AJAX front end. It is available with full source for a licence fee or as a SAAS hosted service (compatible with iPhone, but available via PC/Mac/Linux and a Web browser).
Topiq is a document management system based on topic maps with a Web frontend. Documents can be organized in multiple topics with Unix-like access control. A version control and a file-based authorization module is included. Optional packages are a fuzzy full text search and an LDAP-based authorization module.
DeskNow is a complete mail, calendaring and collaboration server. It offers full mail support, an Ajax Web interface, group calendaring with iCal, meeting planning, an Outlook connector, SyncML, Jabber instant messaging, RSS feeds, document management with WebDAV, message boards, address books, and mailing lists. User management includes virtual domains, user groups, and access control lists for all shared objects. DeskNow also supports server clustering, ActiveDirectory, and LDAP authentication, and can automatically import accounts and emails from any existing mail server.
IGSuite is a Web-based groupware collaboration suite. It gives you a "box" of applications that includes wiki, email, documents, calendar, tasks, fax, contacts, notes, links, and more. The power of collaboration comes in when these individual suite components are shared and used within a group. It strives to provide location independence, platform independence, machine independence, and browser independence.