Vaultedge - Access all your documents in one place.
Keypirinha - A lightning fast and flexible keystroke launcher for Windows. No installation required (portable).
Meta Search - Search your Desktop, Google Drive, Dropbox, Gmail, Evernote.
Alfred - Alfred is an award-winning app for macOS which boosts your efficiency with hotkeys, keywords, text expansion and more. Search your Mac and the web, and be more productive with custom actions to control your Mac.
eesel - The new tab for work
Listary - Listary is a revolutionary search utility for Windows