Best Semantic Search AI tools
Retrieval by meaning rather than exact wording, using embeddings to rank results. The 13 highest-ranked of the 13 apps tagged Semantic Search in the Onei AI catalogue.
Everything tagged Semantic Search: apps, skills and MCP servers
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AI for systematic literature review — search 125 million papers, extract data into tables, and screen at scale.
Editor's pick
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Clipto, Inc.
Local-first AI memory for your media: index terabytes of video, audio and documents on your own machine and search them in plain language.
Also: Local-First, MCP · Editor's pick
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AI notes workspace whose agent tracks tasks from your notes and meetings, with voice capture and an MCP connector for Claude and ChatGPT.
Also: Knowledge Base, MCP
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Pieces (formerly Pieces for Developers) is a desktop app that records your work on-device and makes it searchable for you and your AI tools.
Also: Knowledge Base, Local-First, MCP
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Evokoa
Turn a Postgres database into working memory for AI agents — relational rows, graph traversal and vector search fused into one ranked, token-budgeted context block.
Also: Open Source, RAG, Vector Database
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Glean Technologies, Inc.
Enterprise Work AI platform — permission-aware search across every company app, plus an assistant and agents that act on the results.
Also: Knowledge Base, RAG
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A search engine built for AI — embeddings-based retrieval that finds pages by meaning, not keyword overlap.
Also: Embeddings
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An open-source AI-native database combining vector search, structured filtering, and built-in model integrations.
Also: Embeddings, Open Source, RAG
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The embedding database that starts as a Python import and grows into a distributed cloud service.
Also: Embeddings, Local-First, Vector Database
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An open-source vector search engine written in Rust — fast, memory-efficient, and self-hostable.
Also: Embeddings, Open Source, Vector Database
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A fully managed vector database for semantic search and retrieval at billion-scale, with no infrastructure to run.
Also: Embeddings, RAG, Vector Database
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An AI email client for Gmail that searches, drafts, organises, and schedules from a single prompt.
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Consensus responsibly uses AI to help you conduct research faster.
How this list is ranked
Ranked by editorial weight (0–100), plus 5 points per bookmark up to 10, plus or minus up to 20 for the average review rating; ties go to featured apps, then the most recently updated. Discontinued apps are never ranked.