Campfire
Campfire is a web-based chat application by 37Signals
Updated
Campfire is an open source Ruby on Rails application that can easily be deployed with Hatchbox.
Configuration
To deploy Campfire, use the following Git URL:
https://github.com/basecamp/once-campfire.git
And the main branch.
Processes
Hatchbox will automatically detect and configure processes for the Rails server and solid_queue for background jobs.
Database
Campfire uses a SQLite database so it works best on a single server cluster.