Rambox is a free and open source communications program that integrates common web-based communications systems into a single application. The Rambox community edition supports 98 of the most popular communications services including Facebook Messenger, Skype, Slack, Hangouts, Gmail, inbox.com, Yahoo mail, and others. Rambox provides a configurable notification system that includes a "do not disturb" mode and per-service audio settings. More technical users can customize how individual apps are displayed using Rambox's JS and CSS injection features. Rambox is available for Windows, macOS, and Linux. Source code for the community edition is available from GitHub under the GNU General Public License version 3.