Stonly Knowledge Base - Interactive knowledge bases and help-centers
Keypirinha - A lightning fast and flexible keystroke launcher for Windows. No installation required (portable).
Free Knowledge Base by Dashly - Optimize your customer support with Knowledge Base by Dashly
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.
Intercom - Intercom is a customer relationship management and messaging tool for web businesses. Build relationships with users to create loyal customers.
Listary - Listary is a revolutionary search utility for Windows