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.
Keypirinha - A lightning fast and flexible keystroke launcher for Windows. No installation required (portable).
InvoiceTemple - Are you looking for the FREE Invoice Generator? Make now the most attractive, professional invoices in a single click with Invoice Temple For Small Businesses to corporations. We are trusted by thousands of people across the world.
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.
Zoho Invoice - 100% free online invoicing software for small businesses.
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 .
invoicely - invoicely is a free online invoicing platform for small businesses