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.
Typesense - Typo tolerant, delightfully simple, open source search 🔍
PDF Search for Mac - Search documents using Artificial Intelligence
Meilisearch - Ultra relevant, instant, and typo-tolerant full-text search API
SearchWP - Instantly improve the search experience of your WordPress site today with SearchWP, the best WordPress search plugin you can find!
CloudSponge Address Book Widget - Let your users look up contacts without leaving your site.