Beagle is a search system for Linux and other Unix-like systems, enabling the user to search documents, chat logs, email and contact lists. It is not actively developed.
Beagle grew out of Dashboard, an early Mono-based application for watching and presenting useful information from a user's computer. It is written in C# using Mono and uses a port of Lucene to C# called Lucene.net as its indexer. Beagle includes a Gtk#-based user interface, and integrates with Galago for presence information.