DEVONthink - DEVONtechnologies develops DEVONthink, DEVONagent, and other Mac and iOS apps for document and information management and web research.
Keypirinha - A lightning fast and flexible keystroke launcher for Windows. No installation required (portable).
TaskSurfer - TaskSurfer gives you all of the tools you need to manage things the way you want.
Listary - Listary is a revolutionary search utility for Windows
HoudahSpot - Advanced File Search Utility for Mac OS X
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.