DocFetcher is a free and open source desktop search application. It runs on Windows, Mac OS X and Linux and is written in Java. The application has a graphical user interface, which is written using the Standard Widget Toolkits.

The program is an indexing search tool, meaning it has a local database of file content that it checks, rather than looking over all files on your machine. This means the program must always be running to monitor changes, but search results are instant. Search tools are based on Apache Lucene software, a widely used, open source search engine.

Note that a commercial version of the program DocFetcher Pro is in development with additional features.