semantic-search — independent software & tools

15 independent semantic-search listings the big search engines bury.

• exomem

  github · Free · by Artexis10

  Self-hosted MCP server that makes your Obsidian/markdown vault searchable — text, PDFs, Office docs, images, audio — from any MCP client. Hybrid retrieval over a typed, governed corpus, sub-second at 50k notes; your files stay plain markdown.

• memory-seed

  github · Free · by jnl-tshi

  Portable local memory system and MCP search tooling for file-reading AI coding agents.

• helix-context

  github · Free · by mbachaud

  Agent knowledge index — IDF-weighted retrieval with deterministic SLM embedded models. SQLite, Know-vs-Go

• khive

  github · Free · by ohdearquant

  A knowledge graph your AI agents build, query, and grow. Built for agents that need structure beyond vectors

• Kote

  github · Free · by pedroaugusto04

  A developer memory layer that automatically captures and organizes AI sessions, Git history, and development context into searchable knowledge.

• mcp-memory-graph

  npm · Free · by GitHub Actions

  Local-first memory MCP server for Claude Code and any MCP client: hybrid vector + knowledge-graph search, bi-temporal recall, Obsidian sync. Runs 100% on your machine, $0/token.

• obsidian-hybrid-search

  npm · Free · by flowing-abyss

  [](https://www.npmjs.com/package/obsidian-hybrid-search) [](https://github.com/flowing-a

• pi-vault-mind

  npm · Free · by kylebrodeur

  Passive Obsidian vault extension for pi. Watches @agent markers, dispatches forked subagents (Miner, Broadcaster, Heavy-Lifter), stores in LanceDB with vector + FTS + graph. Multi-agent 'Drop & Forget' workflow for the pi agent ecosystem.

• @retineo/core

  npm · Free · by retineohq

  Connection discovery engine (L0–L3). Open-source core for the Retineo ecosystem.

• ruvector

  npm · Free · by ruvnet

  Self-learning vector database for Node.js — hybrid search, Graph RAG, FlashAttention-3, HNSW, 50+ attention mechanisms

• @tobilu/qmd

  npm · Free · by GitHub Actions

  Query Markup Documents - On-device hybrid search for markdown files with BM25, vector search, and LLM reranking

• 2ndbrain

  github · Free · by apresai

  AI-native markdown knowledge base with semantic search, RAG, and MCP server

• open-brain

  github · Free · by rodaddy

  Local-first search engine for your docs, knowledge bases, and notes. BM25 + vector + HyDE search over 30K+ markdown documents

• promptbook-mcp

  github · Free · by shoaibraza123

  🤖 Store, search, and organize your AI prompts easily with RAG-powered semantic search in this plug-and-play server for developers.

• ai-news-scraper

  github · Free · by techdomegh

  AI News Scraper & Semantic Search: A Python application that scrapes news articles, uses GenAI to generate summaries and identify topics, and provides semantic search capabilities through vector embeddings