After a few years I still use Listary as my main search/launcher. It's very quick, has a very nice look and great system of filters and projects. There are problem with new version to be released, but I'm talking about version number 5.
Nest Cam IQ - Smart home camera, using Google's AI for facial recognition
Keypirinha - A lightning fast and flexible keystroke launcher for Windows. No installation required (portable).
Shinobi.video - Shinobi is the Open Source CCTV software written in Node.JS. Designed with multiple account system, Streams by WebSocket, and Save to WebM and MP4. Shinobi can record IP Cameras and Local Cameras.
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.
ZoneMinder - ZoneMinder is a free and open-source piece of security software that can be used at home or in your business. The software puts you in control of all of your data, and it is exceptionally easy to setup. Read more about ZoneMinder.
Wox - An effective launcher for windows. A full-featured launcher, access programs and web contents as you type. Be more productive ever since. Wox is free for use and open-sourced at Github, Try it now! Download .