Algolia - Algolia's Search API makes it easy to deliver a great search experience in your apps & websites. Algolia Search provides hosted full-text, numerical, faceted and geolocalized search.
Searchkit - UI components for Elasticsearch
Expertrec - Adds super fast search autocomplete, spell correct and search listing pages to your site search.
Appbase.io - Search stack for building modern apps
Typesense - Typo tolerant, delightfully simple, open source search 🔍
X to Elasticsearch Sync - CLI for importing MongoDB, SQL, CSV, JSON to Elasticsearch