Digsby is a proprietary multiprotocol instant messaging (IM) application developed by dotSyntax, LLC. Digsby is written in wxPython and uses WebKit for rendering. It supports most mainstream IM protocols such as AIM, MSN, Yahoo, Google Talk, ICQ, XMPP, and Facebook Chat. Digsby also supports e-mail notifications and alerts from MySpace, Facebook, Twitter and LinkedIn.

This SonicWALL signature identifies legitimate Digsby traffic.