Digsby is a multiprotocol instant messaging application developed by dotSyntax, LLC.
It currently supports e-mail notifications and alerts from MySpace, Facebook and Twitter. It is released under a proprietary license and is free to download. To control access, users must register for a Digsby Account. Registration can be done through the program's installer or through a web interface.
Much like the Blizzard's Battle.Net system, upon loading Digsby contacts its home servers and checks for any application updates. This is done automatically and prevents users from using an outdated version of the application.