Relevanssi Light is a simple, quick and effective search improvement that replaces the default WP search with a fulltext index search.
Cost / License
- Free
- Open Source
Platforms
- Self-Hosted
- Wordpress

Chroma DB is described as 'Open-source search and retrieval database for AI applications' and is a Vector Database in the business & commerce category. There are more than 50 alternatives to Chroma DB for a variety of platforms, including Linux, Self-Hosted, Web-based, Mac and Windows apps. The best Chroma DB alternative is Meilisearch. It's not free, so if you're looking for a free alternative, you could try Elasticsearch or Algolia. Other great apps like Chroma DB are OpenSearch, Golem, Apache Solr and FalkorDB.
Relevanssi Light is a simple, quick and effective search improvement that replaces the default WP search with a fulltext index search.

Measured Search provides a fully-managed personalized search & discovery service offering feature packed textual & relevance based search, contextualized recommendations combined with search & interaction analytics that enable you to increase conversions...
SearchBlox is an out-of-the-box Enterprise Search Solution built on top of Apache Lucene/Solr. It is fast to deploy, easy to manage and available for both on-premise and cloud deployment.
Cludo is a powerful search solution to your website. It is built on top of Elasticsearch which means you do not have to do any further developing, or hire any developer concerning site search. Cludo's focus is to deliver an easy to use search engine with the greatest support...






ParadeDB is a modern Elasticsearch alternative built on Postgres. Built for real-time, update-heavy workloads.

Lunr Search is a compact, full-featured search tool that doesn't require external server-side services. It offers language processors for accurate user query results and can be adjusted to suit your content. Lunr works in your browser or on a server with node.
Simplify how agents connect to enterprise data. Build high-impact AI apps with one centralized solution for agentic retrieval-augmented generation (RAG) workflows.



TinySearch is a lightweight, fast, full-text search engine. It is designed for static websites.
Enterprise search, simplified. Cloud-based enterprise search solution that search across all of your organization’s content sources — Aconex, Procore, Dropbox, Microsoft Sharepoint, Onedrive, and more.

Zevi is a site search engine that is build with NLP and AI at its core. With Zevi a customer can easily pass through your website and give back ranked results based on the businesses preference. Zevi makes site Information discovery a breeze.




ZIR AI allows application developers to add sophisticated ML-powered text search to their applications and platforms. It provides high performance gRPC APIs for indexing and running queries, encryption in transit and rest, and an OAuth 2.0 security model.