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#semantic-search (30 Repositories)

Ranked open-source repositories tagged with #semantic-search, scored by pull request acceptance likelihood and maintainer engagement velocity.

Topic Avg Merge Rate

74.8%

Avg Review Latency

13.0h

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30 repositories tagged #semantic-search

S TierJavaScript 112

modusensus/dsh-mneme

🧠 The memory that dreams — cross-session memory for DeepSeek Harness. Offline & private, auto-consolidates in its sleep (autoDream), visualized in a memory panel.

93.3%
Merge Rate
1d
First Review
100%
1st-Timers
5
Maintainers
S TierTypeScript 979 2 GFIs

liliu-z/stashbase

An open-source, local-first writing workspace where you can write with Claude Code and Codex, drawing on your own sources and past work.

86.5%
Merge Rate
5h
First Review
89%
1st-Timers
13
Maintainers
S TierTypeScript 1.3k 3 GFIs

s2b-dev/smart-second-brain

A free, open-source Obsidian plugin that makes your vault smarter: better search, an interactive knowledge graph, and an AI assistant that knows your notes.

82.3%
Merge Rate
<1h
First Review
100%
1st-Timers
3
Maintainers
S TierZig 471

antflydb/antfly

74.8%
Merge Rate
-
First Review
100%
1st-Timers
8
Maintainers
A TierRust 11.7k

cocoindex-io/cocoindex

Incremental engine for long horizon agents 🌟 Star if you like it!

86.7%
Merge Rate
-
First Review
77%
1st-Timers
13
Maintainers
A TierGo 16.9k

weaviate/weaviate

Weaviate is an open-source vector database that stores both objects and vectors, allowing for the combination of vector search with structured filtering with the fault tolerance and scalability of a cloud-native database​.

66.6%
Merge Rate
-
First Review
47%
1st-Timers
36
Maintainers
A TierTypeScript 218

Helweg/open-codebase-index

Semantic codebase indexing and search for OpenCode, Claude, Codex, Pi, Jcode, and MCP hosts. Powered by Rust and tree-sitter.

87.1%
Merge Rate
-
First Review
75%
1st-Timers
4
Maintainers
A TierPython 3.5k

embeddings-benchmark/mteb

MTEB: State-of-the-art evaluation of embeddings across languages and modalities

72.5%
Merge Rate
-
First Review
76%
1st-Timers
65
Maintainers
A TierPython 2.0k 3 GFIs

doobidoo/mcp-memory-service

Open-source persistent memory for AI agent pipelines (LangGraph, CrewAI, AutoGen) and Claude. REST API + knowledge graph + autonomous consolidation.

57.3%
Merge Rate
4h
First Review
55%
1st-Timers
20
Maintainers
A TierJava 1.4k

infinispan/infinispan

Infinispan is an open source data grid platform and highly scalable NoSQL cloud data store.

81.3%
Merge Rate
-
First Review
92%
1st-Timers
18
Maintainers
A TierPython 13.0k

neuml/txtai

💡 All-in-one AI framework for semantic search, LLM orchestration and language model workflows

69.1%
Merge Rate
7h
First Review
50%
1st-Timers
22
Maintainers
A TierC++ 16.1k 3 GFIs

alibaba/zvec

A lightweight, lightning-fast, in-process vector database

72.6%
Merge Rate
11h
First Review
50%
1st-Timers
34
Maintainers
A TierGo 5.8k 2 GFIs

asciimoo/hister

Your own search engine

70.4%
Merge Rate
-
First Review
75%
1st-Timers
30
Maintainers
A TierRust 11.7k 2 GFIs

lancedb/lancedb

Developer-friendly OSS embedded retrieval library for multimodal AI. Search More; Manage Less.

61.6%
Merge Rate
-
First Review
58%
1st-Timers
71
Maintainers
A TierPython 103

deeplethe/ontopilot

Local-first, agent-assisted document-to-ontology workbench

93.7%
Merge Rate
2h
First Review
88%
1st-Timers
1
Maintainers
A TierPython 5.3k

54yyyu/zotero-mcp

Zotero MCP: Connects your Zotero research library with Claude and other AI assistants via the Model Context Protocol to discuss papers, get summaries, analyze citations, and more.

76.6%
Merge Rate
20h
First Review
81%
1st-Timers
34
Maintainers
A TierPython 26.7k

deepset-ai/haystack

Open-source AI orchestration framework for building context-engineered, production-ready LLM applications. Design modular pipelines and agent workflows with explicit control over retrieval, routing, memory, and generation. Built for scalable agents, RAG, multimodal applications, semantic search, and conversational systems.

65.8%
Merge Rate
-
First Review
51%
1st-Timers
82
Maintainers
A TierRust 226

ramakay/claude-self-reflect

Claude forgets everything. This fixes that. 🔗 www.npmjs.com/package/claude-self-reflect

63.2%
Merge Rate
20h
First Review
67%
1st-Timers
4
Maintainers
A TierRust 4.1k

zvec-ai/zvec-grep

Local-first search across your workspace, built for humans and AI agents.

47.3%
Merge Rate
-
First Review
42%
1st-Timers
31
Maintainers
A TierPython 1.4k 1 GFIs

chunkhound/chunkhound

Your entire engineering context, deeply understood

82.5%
Merge Rate
6d
First Review
100%
1st-Timers
11
Maintainers
A TierTypeScript 114

gmickel/gno

Local AI-powered document search and editing with first-in-class hybrid retrieval, LLM answers, WebUI, REST API and MCP support for AI clients.

81.4%
Merge Rate
-
First Review
100%
1st-Timers
2
Maintainers
A TierRust 499

Muvon/octocode

Structural code intelligence for AI agents — semantic search, knowledge graphs, and a built-in MCP server in one Rust binary. Give Claude, Cursor, and any MCP client a deep understanding of your codebase.

90.0%
Merge Rate
3d
First Review
100%
1st-Timers
3
Maintainers
A TierJavaScript 126

ctxr-dev/llm-wiki-memory

Local, git-versioned memory for AI coding agents. No RAG, no Docker, no external service. Capture, compile, recall over a local LLM wiki with on-device embeddings and an MCP server.

100.0%
Merge Rate
-
First Review
100%
1st-Timers
1
Maintainers
A TierRust 8.3k 2 GFIs

deeplethe/utopia

World's first open-source enterprise world model.

15.0%
Merge Rate
-
First Review
0%
1st-Timers
11
Maintainers
B TierTypeScript 464

aaronsb/obsidian-mcp-plugin

High-performance Model Context Protocol (MCP) server for Obsidian that provides AI tools with direct vault access through semantic operations and HTTP transport.

100.0%
Merge Rate
<1h
First Review
100%
1st-Timers
0
Maintainers
B TierTypeScript 113

TheMind-AI/fluid-db

Fluid Database

100.0%
Merge Rate
<1h
First Review
100%
1st-Timers
0
Maintainers
A TierPython 2.6k

zilliztech/memsearch

A persistent, unified memory layer for all your AI agents (e.g. Claude Code, Codex, DSH), backed by Markdown and Milvus.

48.8%
Merge Rate
11h
First Review
40%
1st-Timers
24
Maintainers
A TierJava 105

EBISPOT/ols4

The EMBL-EBI Ontology Lookup Service (OLS)

66.3%
Merge Rate
2d
First Review
0%
1st-Timers
5
Maintainers
A TierTypeScript 158

dcostenco/prism-coder

Persistent session memory for AI coding agents — local-first, with on-device inference, associative recall, and drift detection. Works with Claude Code, Cursor, and Codex.

76.0%
Merge Rate
1d
First Review
50%
1st-Timers
1
Maintainers
B TierTypeScript 407

shinpr/mcp-local-rag

Local-first RAG server for developers. Semantic + keyword search for code and technical docs. Works with MCP or CLI. Fully private, zero setup.

75.9%
Merge Rate
-
First Review
33%
1st-Timers
2
Maintainers