DocFetcher - DocFetcher is a portable German/English open source desktop search application.

Agent Ransack - Agent Ransack is a tool for finding files and information on your hard drive fast and efficiently.

Everything by Voidtools - Everything. Locate files and folders by name instantly. Everything. Small installation file. Clean and simple user interface.

Lemur Project - The Lemur Project develops search engines, browser toolbars, text analysis tools, and data resources that support research and development of information retrieval and text mining software. The project is best known for its Indri search engine.

Regain OST Converter Tool - Professional utility to repair or convert offline OST files to Outlook PST file.

Recoll - Recoll is a desktop full-text search tool. Recoll finds keywords inside documents as well as file names.