Mattermost provides high trust collaboration and messaging solutions through an open source, community-powered approach. Enjoy all the productivity benefits of workplace messaging across web, mobile and PC, with unlimited archiving, search and integrations within IT-controlled private environments in public clouds, including AWS and Azure, as well as on-premise in private clouds and virtual or physical servers.

A shared workspace tool for documentation, planning and notes with powerful collaboration features and easy-to-use WYSIWYG editing.

A bug tracking and agile project management software with powerful collaboration features and easy-to-use WYSIWYG editing

osTicket is a widely-used open source support ticket system.