Compare software

Horde GroupwareAfterlogic WebMail Lite PHP
Free

Free and open source with no paid tier.

 Free

Free and open source for personal and commercial use.

Web, Self-hosted Web, Self-hosted
  • Full groupware suite beyond mail, including tasks, notes and time tracking
  • CalDAV, CardDAV and ActiveSync sync
  • Works with any existing IMAP server, Plesk or cPanel
  • Plugin framework and API for extending it
  • Requires running and maintaining a PHP server
  • Older codebase with a long history of security fixes to track
  • Requires your own web server and IMAP server
  • Office document preview depends on Microsoft's online viewer
Self-hosted Self-hosted
Open source Open source
License: LGPL/GPL License not stated
Not stated if an account is needed No account needed
Not stated if it works offline Not stated if it works offline

Checked September 23, 2026

Checked October 2, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.