Thank you for your hasty response. SpaceChat has some unique features like hover text, events, and a lot more. I believe it would be a worthwhile investment. Another great thing- it has infinite server licenses due to the fact that it works out of the box (premium, no DRM at all) with the Jenkins CI build (https://ci.yakovliam.com/job/SpaceChat/).
Summary: I believe it's worth it, and you can download the full version completely free at the link above.