Typesense is an open-source, fast search engine built from scratch for modern search experiences. Unlike Elasticsearch (designed for logs) or traditional database full-text search, Typesense is optimized for instant search-as-you-type, typo tolerance, and faceted navigation. You define a collection (schema), index documents (JSON records), and query via REST API or client libraries. Typesense handles typo matching ("elasticsearch" matches "elasticsearch"), faceting (count results by category), and ranking automatically. It's lightweight (runs on a single server) and offers managed hosting (Typesense Cloud).