Grove suggests getting your own private IRC server from them adding additional features.
Ranked in these QuestionsQuestion Ranking
Pro Inline images
Web client embeds posted images.
Pro SSL for web & IRC clients
You can ping people separately, people online or everyone.
Pro You can use web or IRC clients
Pro Integrated services and workflow
Including GitHub, Bitbucket, Heroku and Pivotal Tracker. Also, supports webhooks.