Executor - Executor a windows launcher
Scherlokk - Mac OS X application. Simple and user friendly, Scherlokk will find your media and missed files - quickly.
Advanced Run - Advanced Run is a replacement for a standard Windows Run dialog.
Slingscold - Slingscold is a lightweight application launcher similar to Launchpad in Mac OS X.
Keybreeze - It's a small toolbar that you can activate by pressing a hotkey.
kupfer - Kupfer is a command tool heavily inspired by https://alternativeto.