// Search & vector stores
OpenSearch3.9.0
🔎 Open source distributed and RESTful search engine.
Open source Maintained For agents
IN ONE PARAGRAPH
OpenSearch is 🔎 Open source distributed and RESTful search engine.
Good for: Developers who want their agent (Claude Code, Codex, Cursor…) to search & vector stores.
01How to start
- 1Read the official README for requirements and permissions.
- 2Install it from the official package registry:
brew install opensearch - 3Tell your agent the command exists (e.g. in AGENTS.md / CLAUDE.md) so it knows when to call it.
02Alternatives & comparison
Compare side by side → elasticsearch Free and Open Source, Distributed, RESTful Search Engine ★ 78k vespa The AI search platform ★ 7.1k meilisearch A lightning-fast search engine API bringing AI-powered hybrid search to your sites and applications. ★ 60k typesense Open Source alternative to Algolia + Pinecone and an Easier-to-Use alternative to ElasticSearch ⚡ 🔍 ✨ Fast, typo tolerant, in-memory fuzzy Search Engine for building delightful search experiences ★ 27k txtai 💡 All-in-one AI framework for semantic search, LLM orchestration and language model workflows ★ 13k