So what else is old school Mibbit IRC clients? It is web based, which means that you run from anywhere. But despite the fact that you run from your Web browser Mibbit, you get all the features you expect from a desktop client based on IRC, and then wait a bit.
It is a search engine, which lets you channel by keyword. You can change colors, and even with a translator configured to communicate with users in different languages. Each new channel or server screen opens in a new tab Mibbit, and when you walk Mibbit in a tabbed browser, you cute little warnings like "stuff on my server!" or "People said things!"