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.

Use case

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144 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

    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

      19GitHub stars+1 (+5.6 %)
    • 2

      Agent
      Active

      Portable AI agent runtime for the JVM. One @Agent class runs on Spring AI, LangChain4j, Anthropic, or 9 more behind one SPI. Token streaming, tool calls, human approvals, and governance over WebSocket, SSE, gRPC, or WebTransport/HTTP3.…

      JavaLicense: Apache-2.0
      • a2a
      • acp
      • agentic-ai
      • ai-agents
      • anthropic

      githubmeasured growthOpen source ↗

      3 804GitHub stars+8 (+0.21 %)
    • 3

      MCP
      Active

      Universal MCP Server with advanced AI memory capabilities and semantic search.

      ↓ 913 downloads/weekPythonLicense: Apache-2.0

        mcpmeasured growthOpen source ↗

        Install claude mcp add marm-mcp-server -- uvx marm-mcp-server

        339GitHub stars+4 (+1.2 %)
      • 4

        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 ↗

        22GitHub stars+1 (+4.8 %)
      • 5

        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+6 (+0.38 %)
      • 6

        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 ↗

        30GitHub stars+1 (+3.4 %)
      • 7

        Agent
        Active

        TiDB is built for agentic workloads that grow unpredictably, with ACID guarantees and native support for transactions, analytics, and vector search. No data silos. No noisy neighbors. No infrastructure ceiling.

        GoLicense: Apache-2.0
        • agent
        • agent-context
        • agent-memory
        • agentic
        • ai

        githubmeasured growthOpen source ↗

        40 484GitHub stars+6 (+0.01 %)
      • 8

        Other
        Active

        Nuwax Agent OS - An enterprise-grade AI Agent Development and Operation Platform - Providing a complete solution for agent creation and distribution, knowledge base management, model proxy, memory system, and plugin ecosystem.

        TypeScriptLicense: Apache-2.0
        • a2a
        • agent
        • agent-os
        • agent-sandbox
        • agentic

        githubmeasured growthOpen source ↗

        877GitHub stars+4 (+0.46 %)
      • 9

        Other
        Active

        High-performance data engine for AI and multimodal workloads. Process images, audio, video, and structured data at any scale

        RustLicense: Apache-2.0
        • ai-engineering
        • ai-pipeline
        • arrow
        • artificial-intelligence
        • big-data

        githubmeasured growthOpen source ↗

        5 736GitHub stars+5 (+0.09 %)
      • 10

        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 ↗

        177GitHub stars+2 (+1.1 %)
      • 11

        Skill
        Active

        Turn scattered knowledge, operational data, and history into source-linked context that your agents can inspect, explain, and reuse.

        PythonLicense: MIT
        • agent-memory
        • agent-skills
        • agentic-ai
        • agentic-rag
        • ai-agents

        githubmeasured growthOpen source ↗

        Install git clone https://github.com/sparkplug604/praxis ~/.claude/skills/praxis

        48GitHub stars+1 (+2.1 %)
      • 12

        MCP
        Active

        A semantic search engine for files and code.

        PythonLicense: MIT

          mcpmeasured growthOpen source ↗

          Install claude mcp add vexor -- uvx vexor

          239GitHub stars+2 (+0.84 %)
        • 13

          Skill
          Dormant

          小遥搜索，听懂你的话、看懂你的图，用AI找到本地任何文件。让搜索像聊天一样简单。XiaoyaoSearch: Understands your words, reads your images, finds any local file with AI. Making search as easy as chatting.

          Python
          • agent-skills
          • ai-search
          • document-search
          • file-search
          • local-search

          githubmeasured growthOpen source ↗

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

          1 085GitHub stars+3 (+0.28 %)
        • 14

          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 ↗

          71GitHub stars+1 (+1.4 %)
        • 15

          Other
          Active

          CrateDB is a distributed and scalable SQL database for storing and analyzing massive amounts of data in near real-time, even with complex queries. It is PostgreSQL-compatible, and based on Lucene.

          JavaLicense: Apache-2.0
          • analytics
          • big-data
          • cratedb
          • database
          • dbms

          githubmeasured growthOpen source ↗

          4 432GitHub stars+3 (+0.07 %)
        • 16

          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

          80GitHub stars+1 (+1.3 %)
        • 17

          Agent
          Active

          BISHENG is an open LLM devops platform for next generation Enterprise AI applications. Powerful and comprehensive features include: GenAI workflow, RAG, Agent, Unified model management, Evaluation, SFT, Dataset Management, Enterprise-level…

          PythonLicense: Apache-2.0
          • agent
          • ai
          • chatbot
          • enterprise
          • finetune

          githubmeasured growthOpen source ↗

          11 923GitHub stars+3 (+0.03 %)
        • 18

          MCP
          Active

          MCP server for Claude Code and Codex. One tool call replaces ~42 minutes of agent exploration

          TypeScriptLicense: MIT
          • ai-agents
          • claude
          • claude-ai
          • claude-code
          • claude-code-plugin

          githubmeasured growthOpen source ↗

          102GitHub stars+1 (+0.99 %)
        • 19

          MCP
          Active

          Self improving agents through iterations

          PythonLicense: Apache-2.0
          • agent-learning
          • agent-memory
          • agentic-workflows
          • ai-agents
          • claude-code

          githubmeasured growthOpen source ↗

          105GitHub stars+1 (+0.96 %)
        • 20

          Skill
          Active

          Find out what your coding agents already know. Docmancer indexes the memory, rules, and instructions Claude Code, Codex, Cursor, and Gemini wrote on your machine, then carries the durable parts to every agent. It is local-first and under…

          PythonLicense: MIT
          • agent-memory
          • ai
          • ai-agents
          • ai-memory
          • claude-code

          githubmeasured growthOpen source ↗

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

          123GitHub stars+1 (+0.82 %)
        • 21

          Agent
          Active

          Ruby's capable AI runtime

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

          githubmeasured growthOpen source ↗

          138GitHub stars+1 (+0.73 %)
        • 22

          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 %)
        • 23

          MCP
          Active

          Semantic search across Sui documentation and knowledge sources, powered by kapa.ai

          RustLicense: Apache-2.0

            mcpmeasured growthOpen source ↗

            Remote server, to be declared in the MCP configuration https://sui.mcp.kapa.ai

            7 740GitHub stars+2 (+0.03 %)

          Learning resources

          Ranked by measured growth, normalized across sources. These resources remain available separately and do not take part in the main tool ranking.

          1. 1

            agent-systems-handbook

            Agent
            ActiveOpen source ↗

            A practical AI agents handbook covering agent systems, agentic workflows, LangGraph, MCP/A2A, context engineering, agent memory, evaluation, observability, and multi-agent architecture. Current trend focus: Gemini Interactions API and…

            MDX
            • a2a
            • agent-framework
            • agent-memory
            • agentic-ai
            • agentic-workflow
            githubResourcemeasured growth
            316GitHub stars+3 (+0.96 %)
          2. 2

            dspy-skills

            Skill
            ActiveOpen source ↗

            Collection of Claude Skills for DSPy framework - program language models, optimize prompts, and build RAG pipelines systematically

            PythonLicense: MIT
            • agent-skills
            • claude-code
            • claude-skills
            • dspy
            • llm
            github

            Install git clone https://github.com/OmidZamani/dspy-skills ~/.claude/skills/dspy-skills

            Resourcemeasured growth
            122GitHub stars+1 (+0.83 %)