CampBrain - CampBrain is an online registration software that has a superior registration structure that enables unlimited camps,sessions and option.
Roundcube - Web-based IMAP email client
CampManager - CampManager campsite online booking and management software that offers the one solution for everything
Horde - Horde Groupware is a free, enterprise ready, browser based collaboration suite.
Cogran - Cogran is a customizable management system for camps, classes, and more.
Mailpile - Mailpile is a modern, fast web-mail client with user-friendly encryption and privacy features.