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.
KeepSafe - Keep your entire photo library safely stored in an encrypted private cloud.
Keypirinha - A lightning fast and flexible keystroke launcher for Windows. No installation required (portable).
Hide Secrets - Hide Secrets is an app that allows hiding everything they deem confidential on their smartphone.
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.
Hexlock - Security app locker keeps apps private with smart profiles for any situation
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 .