Ruby scriptable and open-source messaging system.
One thing that sets rat apart from irssi is its dependency on plugins for actual communication, which means that it has the potential to connect users with others on any network. This feature makes rat highly suitable for anyone looking for a messaging system to cater to their diverse communication needs.
Another great feature that rat offers is its full-scripting capability using Ruby, making it easy to modify and enhance the software. With its inherent Ruby-based coding, this messaging system is built to be easily hacked and customized to fit the specific communication requirements of its users.
Overall, rat is a versatile and customizable messaging system that provides powerful communication features, all while being open source and easy to use.