RAG and search: tools for developers

Retrieval-augmented tools, vector databases, embeddings and semantic search. An entry can appear under several use cases when its topics or description provide several explicit signals.

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124 entries in this view.

Tool ranking

Ranked by measured growth, normalized across sources. Raw values keep their source-specific window, shown under each tool; a change requires at least two snapshots from the last 7 days.

  1. 1

    Library
    Active

    LakeSoul is an end-to-end, realtime cloud-native Lakehouse framework for fast data ingestion, concurrent updates, incremental analytics, multimodal data processing and vector search — powering next-generation BI and AI workloads.

    JavaLicense: Apache-2.0
    • arrow
    • daft
    • datafusion
    • flink
    • gluten

    githubmeasured growthOpen source ↗

    3 249GitHub stars+2 (+0.06 %)
  2. 2

    Agent
    Active

    6 specialized AI agents collaborating via A2A protocol to power e-commerce — product discovery, orders, pricing, reviews, inventory & support. Dual-stack (Python + .NET/C#) with generative UI. Built with Microsoft Agent Framework, FastAPI,…

    PythonLicense: MIT
    • a2a-protocol
    • ai-agents
    • aspire-dashboard
    • azure-openai
    • csharp

    githubmeasured growthOpen source ↗

    23GitHub stars+2 (+9.5 %)
  3. 3

    Agent
    Active

    Ruby's capable AI runtime

    RubyLicense: MIT
    • a2a
    • a2a-client
    • agent
    • agent2agent
    • agents

    githubmeasured growthOpen source ↗

    139GitHub stars+2 (+1.5 %)
  4. 4

    MCP
    Active

    AST knowledge graph MCP server for Claude Code — semantic search, call graph traversal, HTTP route tracing, impact analysis. Auto-indexes 10 languages via Tree-sitter.

    RustLicense: MIT
    • ast
    • call-graph
    • claude-code
    • claude-code-plugin
    • code-navigation

    githubmeasured growthOpen source ↗

    72GitHub stars+2 (+2.9 %)
  5. 5

    Skill
    Active

    Harness engineering applied to knowledge production: a self-evolving multi-agent newsroom that turns your documents into a cross-linked markdown wiki. A "reground" loop pulls published pages back in before they go stale — writer ≠ reviewer,…

    PythonLicense: MIT
    • agentic-ai
    • ai-agents
    • claude
    • claude-code
    • claude-skills

    githubmeasured growthOpen source ↗

    Install git clone https://github.com/alfadur7/llm-wiki-newsroom ~/.claude/skills/llm-wiki-newsroom

    82GitHub stars+2 (+2.5 %)
  6. 6

    Skill
    Active

    FoJin-powered Buddhist AI persona framework — source-grounded, boundary-aware, fidelity-tested, runtime-ready.

    PythonLicense: MIT
    • agent-skills
    • ai-persona
    • bdrc
    • buddhism
    • chinese-buddhism

    githubmeasured growthOpen source ↗

    Install git clone https://github.com/xr843/Master-skill ~/.claude/skills/Master-skill

    382GitHub stars+2 (+0.53 %)
  7. 7

    Skill
    Active

    Agent skills for Qdrant vector search: scaling, performance optimization, search quality, monitoring, deployment, model migration, version upgrades, and SDK usage across Python, TypeScript, Rust, Go, .NET, Java

    PythonLicense: Apache-2.0
    • agent-skills
    • ai-agents
    • claude-code
    • codex
    • cursor

    githubmeasured growthOpen source ↗

    Install git clone https://github.com/qdrant/skills ~/.claude/skills/skills

    230GitHub stars+2 (+0.88 %)
  8. 8

    MCP
    Active

    USPTO patent creation system with MCP server + Claude Code plugin. Hybrid RAG search over MPEP/USC/CFR, BigQuery access to 76M+ patents, automated 35 USC 112 compliance checks, prior art search, diagram generation. GPU-accelerated with…

    PythonLicense: MIT
    • bigquery
    • claude-code
    • claude-code-plugin
    • faiss
    • mcp-server

    githubmeasured growthOpen source ↗

    178GitHub stars+2 (+1.1 %)
  9. 9

    MCP
    Active

    Graph-powered code intelligence with semantic search and knowledge graph for AI assistants

    ↓ 107 downloads/weekTypeScriptLicense: NOASSERTION

      mcpmeasured growthOpen source ↗

      Install claude mcp add codeseeker -- npx codeseeker

      20GitHub stars+1 (+5.3 %)
    • 10

      MCP
      Active

      Apple Developer Documentation with Semantic Search, RAG, and AI reranking for MCP clients

      TypeScriptLicense: MIT

        mcpmeasured growthOpen source ↗

        Remote server, to be declared in the MCP configuration https://mcp.apple-rag.com

        117GitHub stars+1 (+0.86 %)
      • 11

        Skill
        Active

        Local NotebookLM for Claude Code via Google Antigravity (agy / Gemini 3.x): /agy:notebook turns a folder of documents into per-doc summaries + a relevance index + a cited synthesis + Q&A. Plus audio/video transcription, deep web research…

        PythonLicense: MIT
        • agy
        • agy-cli
        • anthropic
        • antigravity
        • antigravity-cli

        githubmeasured growthOpen source ↗

        Install /plugin marketplace add MarcosNahuel/antigravity-plugin-cc

        27GitHub stars+1 (+3.8 %)
      • 12

        MCP
        Active

        The Private Agent OS — search files, run AI agents, connect to 10,000+ tools via the complete protocol stack (MCP, AG-UI, A2UI, A2A). Zero cloud. Zero telemetry. On-device inference.

        Rust
        • a2a
        • a2ui
        • ag-ui
        • agent-orchestration
        • agent-os

        githubmeasured growthOpen source ↗

        31GitHub stars+1 (+3.3 %)
      • 13

        MCP
        Active

        Local semantic search over Obsidian vaults via Smart Connections embeddings. Multi-vault, private.

        TypeScriptLicense: MIT

          mcpmeasured growthOpen source ↗

          Install claude mcp add smart-connections-mcp -- npx smart-connections-mcp

          55GitHub stars+1 (+1.9 %)
        • 14

          Other
          Active

          A memory-first AI agent that remembers why decisions were made — not just the last message. Runs local (Ollama), cloud (Claude · OpenAI · Gemini), or decentralized TEE. Graph memory, self-learning skills, multi-model routing, sandboxed…

          RustLicense: MIT
          • a2a
          • acp
          • ai-agent
          • claude
          • cli

          githubmeasured growthOpen source ↗

          58GitHub stars+1 (+1.8 %)
        • 15

          MCP
          Active

          RuvNet Brain — a downloadable, source-grounded brain for Claude Code over Reuven Cohen's (rUv's) RuvNet stack: RuVector/RVF, Ruflo, AgentDB, RuLake, SPARC + 21 building blocks. Grounds Claude in real source via one MCP tool (search_ruvnet),…

          JavaScript
          • agentdb
          • ai-agents
          • anthropic-claude
          • claude-code
          • claude-code-plugin

          githubmeasured growthOpen source ↗

          65GitHub stars+1 (+1.6 %)
        • 16

          MCP
          Active

          Persistent memory for Claude Code & Codex CLI. Auto-extracted knowledge graph, multi-representation embeddings, 3D WebGL visualization. LongMemEval R@5=97.45%. Self-hosted, Ollama-optional

          PythonLicense: MIT
          • ai-memory
          • ai-tools
          • anthropic
          • chromadb
          • claude-code

          githubmeasured growthOpen source ↗

          67GitHub stars+1 (+1.5 %)
        • 17

          MCP
          Active

          Token-efficient code review knowledge graph: semantic search and call-graph resolution.

          PythonLicense: Apache-2.0

            mcpmeasured growthOpen source ↗

            Install claude mcp add better-code-review-graph -- uvx better-code-review-graph

            67GitHub stars+1 (+1.5 %)
          • 18

            Skill
            Active

            Hivemind turns your traces into reusable skills across agents

            TypeScriptLicense: Apache-2.0
            • ai
            • ai-agents
            • ai-memory
            • anthropic
            • artificial-intelligence

            githubmeasured growthOpen source ↗

            Install /plugin marketplace add activeloopai/hivemind

            1 593GitHub stars+1 (+0.06 %)
          • 19

            Other
            Active

            Open-source enterprise AI agent platform for centrally governing agents, tools, memory, RAG, approvals, and durable workflows with FastAPI, LangGraph, LangChain, and LangSmith.

            Python
            • a2a-protocol
            • agent-orchestration
            • agent-platform
            • agentic-ai
            • ai-agents

            githubmeasured growthOpen source ↗

            2GitHub stars+1 (+100.0 %)
          • 20

            Other
            Active

            The .NET library to build AI agents with 30+ built-in connectors.

            C#License: MIT
            • a2a
            • agent
            • agent-framework
            • agent-orchestration
            • agent2agent

            githubmeasured growthOpen source ↗

            639GitHub stars+1 (+0.16 %)
          • 21

            Agent
            Active

            Utilities to spin up Pydantic AI agents with a few additional enhancements and integrations

            PythonLicense: MIT
            • a2a
            • agents
            • embeddings
            • mcp
            • pydantic-ai

            githubmeasured growthOpen source ↗

            5GitHub stars+1 (+25.0 %)
          • 22

            MCP
            Active

            Cognitive memory for AI agents — semantic search, Hebbian learning, knowledge graphs.

            ↓ 85 downloads/weekRustLicense: Apache-2.0

              mcpmeasured growthOpen source ↗

              Install claude mcp add shodh-memory -- npx @shodh/memory-mcp

              277GitHub stars+1 (+0.36 %)
            • 23

              MCP
              Active

              Persistent local AI memory. SQLite + FTS5 + vector search, knowledge graph. No cloud, no API keys.

              ↓ 59 downloads/weekTypeScriptLicense: MIT

                mcpmeasured growthOpen source ↗

                Install claude mcp add local-memory-mcp -- npx @studiomeyer/local-memory-mcp

                12GitHub stars+1 (+9.1 %)
              • 24

                MCP
                Active

                Persistent memory for AI assistants with semantic search and knowledge graph relationships.

                RustLicense: Apache-2.0

                  mcpmeasured growthOpen source ↗

                  Install claude mcp add octobrain -- npx @muvon/octobrain

                  12GitHub stars+1 (+9.1 %)
                • 25

                  MCP
                  Active

                  Graph context, semantic search, guarded edits, and reviewable Git for local Obsidian vaults.

                  ↓ 123 downloads/weekTypeScriptLicense: MIT

                    mcpmeasured growthOpen source ↗

                    Install claude mcp add obsidian-everywhere -- npx obsidian-everywhere

                    14GitHub stars+1 (+7.7 %)