GroupOffice is a groupware suite that takes your office online, implementing online collaboration and CRM. It allows you to share projects, calendars, files and email online with co-workers and clients. It is easy to use and fully customizable. It also features synchronization with PDAs and Outlook.
EGroupware is a Web-based groupware suite. It contains many modules, including Calendar (personal calendar and group scheduling, notifications and alarms), Mail (IMAP only), InfoLog (todos, notes, and phone calls linked to contacts/CRM), Contacts (an address book for storing and sharing contact information), ProjectManager, Tracker (bug or incident tracking), TimeSheet, SyncML, CalDAV & CardDAV support, and SiteMgr content management
Domain Technologie Control (DTC) is a Web-based control panel for hosting that can delegate the task of creating subdomains, email, and FTP accounts to users for the domain names they own. It has support for many programs, including bind 8 and 9, MySQL, Apache, PHP 4, qmail, Postfix, Courier, Dovecot, ProFTPD, Webalizer, and mod-log-sql. It can also generate backup scripts, calculation scripts, and config files using a single system UID/GID, and monitor all traffic accounting per user and per service. It is fully skinnable and translated into several languages.
GroupServer is a Web-based mailing list manager designed for large sites. It provides email interaction like a traditional mailing list manager but also supports reading, searching, and posting of messages and files via the Web. Users have forum-style profiles, and can manage their email addresses and other settings using the same Web interface. It has supports features such as Atom feeds, a basic CMS, statistics, multiple verified addresses per user, and bounce detection, and is able to be heavily customized.
phpFormGenerator is an easy-to-use tool to create reliable and efficient web forms. No programming of any sort is required. It has the ability to create up to 100 form fields, and to add a variety of field types including text boxes, drop down selection menus, check boxes, radio buttons, and freeform text areas. All field types are highly customizable. The form data can be sent to a provided email address, or stored in a database table (currently MySQL).
QmailAdmin is a Web control panel for the administration of qmail/vpopmail-based POP, IMAP, LDAP, or Web mail accounts, forwarding, aliases, autoresponders, and mailing lists. It is perfect for ISPs, Web hosting sites, or companies that want to provide a nice interface for managing email accounts. It works with qmail, vpopmail, sqwebmail, and courier-imap.