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.
Cerb is a fast and flexible Web-based platform for business collaboration and automation. It helps you remember anything about anyone, collaborate from anywhere, deftly reply to a flood of email, automate, stay informed, capture feedback, track time, flag opportunities, manage tasks, share expert knowledge, and otherwise execute efficiently.
tkbiff allows arbitrary commands to be executed upon mail reception. If you like programs such as xbiff and xbiff++ but wish they were more flexible, then you'll like tkbiff. Unlike other biffs, tkbiff is fully customizable. tkbiff also doesn't waste your valuable screen space with icons; instead, it shows you the mail itself. It supports UNIX, Mac, and Windows, IMAP, POP, and UNIX-style mail files, and SSL and APOP.
Rbmhshow seeks to provide an efficient and lightweight MIME- capable command-line MH mail environment, leveraging existing applications wherever possible. It is a flexible alternative to the standard MH mhl and mhshow applications. MIME messages are displayed in a single continuous less session, with non-plaintext components (e.g. HTML, Word, JPEG) converted to text by the appropriate utility. PGP and S/ MIME signatures are automatically validated, headers and separators are coloured, and the less prompt displays information about the current mail. Command keys are then provided within less to perform common operations, such as replying to, refiling or deleting mail, moving to the next message, etc.