autoComplete.js - Simple autocomplete pure vanilla Javascript library.

Haystack Search - Haystack helps you make the most of your time, by searching all your files and documents in the cloud in one place. It's been built for privacy from the ground up, so your data isn't stored on a server, just your computer.

Vue InstantSearch by Algolia - Build beautiful Search UX on top of Vue.js & Laravel

MailJack+ - Send PDFs as postal mail

Result Tree - Search multiple sites at once

Paperkit - Create and download custom graph, lined, or dot grid paper