Homer, from Blue Cow Software, was an IRC client for Apple Macintosh computer systems during the 1990s, written by Tob Smith, and distributed as shareware. System 7 or later of the classic Mac OS was required, as was MacTCP. It featured an icon view of users in a channel, which would animate when the user posted to the channel. It also provided notification of incoming CTCP Finger commands. Ircle included and extended this feature, "face files" to larger images. A late version of Homer reportedly allowed collaborative drawing across the network.