Launchy is a free and open-source muti-platform application launcher.

TagSpaces is an open source data manager and file navigator. It helps organize files on local drives by adding tags to files.

Google Desktop was a computer program with desktop search capabilities, created by Google for Linux, Apple Mac OS X, and Microsoft Windows systems.

EasyFind is an alternative tool to Spotlight, OS X's built-in search tool.

grep is a command-line utility for searching plain-text data sets for lines that match a regular expression.

Alfred is a productivity application for Mac OS X, which boosts your efficiency with hotkeys, keywords and text expansion.

DocFetcher is an open source desktop search application that runs on Microsoft Windows, Mac OS X and Linux.

XWiki is a free wiki software platform written in Java with a design emphasis on extensibility.

Recoll is a desktop search tool that provides efficient full text search in a friendly GUI, with minimum technical sophistication and few mandatory external d…