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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119 entries in this view.

Tool ranking

Ranked by known GitHub stars, highest first; archived repositories come after maintained repositories. 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

    Other
    Active

    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…

    PythonLicense: Apache-2.0
    • agent-framework
    • agentic-ai
    • agentic-rag
    • agents
    • ai

    githubmeasured growthOpen source ↗

    26 408GitHub stars+56 (+0.21 %)
  2. 2

    Other
    Active

    Test your prompts, agents, and RAGs. Red teaming/pentesting/vulnerability scanning for AI. Compare performance of GPT, Claude, Gemini, DeepSeek, and more. Simple declarative configs with command line and CI/CD integration. Used by OpenAI…

    TypeScriptLicense: MIT
    • ci
    • ci-cd
    • cicd
    • evaluation
    • evaluation-framework

    githubmeasured growthOpen source ↗

    24 797GitHub stars+146 (+0.59 %)
  3. 3

    MCP
    Active

    🔥 MaxKB is an open-source platform for building enterprise-grade agents. 强大易用的开源企业级智能体平台。

    PythonLicense: GPL-3.0
    • agent
    • agentic-ai
    • chatbot
    • deepseek-r1
    • knowledgebase

    githubmeasured growthOpen source ↗

    22 710GitHub stars+70 (+0.31 %)
  4. 4

    Skill
    Active

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

    C++License: Apache-2.0
    • agent-skills
    • db
    • embedded
    • faiss
    • fts

    githubmeasured growthOpen source ↗

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

    15 741GitHub stars+209 (+1.3 %)
  5. 5

    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 %)
  6. 6

    Other
    Active

    Graph-Native Infrastructure for Context and Accountable AI Systems

    PythonLicense: MIT
    • agent-memory
    • ai
    • ai-governance
    • ai-infrastructure
    • artificial-intelligence

    githubmeasured growthOpen source ↗

    11 884GitHub stars+735 (+6.6 %)
  7. 7

    Agent
    Active

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

    RustLicense: Apache-2.0
    • agentic-data-framework
    • ai
    • ai-agents
    • change-data-capture
    • codebase-intelligence

    githubmeasured growthOpen source ↗

    11 459GitHub stars+29 (+0.25 %)
  8. 8

    Other
    Active

    Data Agent Ready Warehouse : One for Analytics, Search, AI, Python Sandbox. — rebuilt from scratch. Unified architecture on your S3.

    Rust
    • ai
    • bigdata
    • cloud-native
    • database
    • elasticsearch

    githubmeasured growthOpen source ↗

    9 434GitHub stars+10 (+0.11 %)
  9. 9

    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 starsstable
    • 10

      MCP
      Active

      A trilingual (繁中 / English / 简中) learning roadmap for agentic AI: from LLM basics to multi-agent systems, with 240+ curated resources and hands-on examples. 中文 AI agent 學習地圖。

      PythonLicense: MIT
      • agentic-ai
      • agentic-workflows
      • ai-agent
      • ai-agents
      • awesome-list

      githubmeasured growthOpen source ↗

      6 642GitHub stars+166 (+2.6 %)
    • 11

      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 741GitHub stars+10 (+0.17 %)
    • 12

      Agent
      Active

      An event-driven framework designed to build and orchestrate multi-agent AI systems. It enables seamless integration of AI agents with real-world data sources and systems, facilitating complex, multi-step workflows.

      PythonLicense: Apache-2.0
      • a2a
      • agentframework
      • agentic
      • agentic-ai
      • agentic-framework

      githubmeasured growthOpen source ↗

      4 950GitHub stars-1 (-0.02 %)
    • 13

      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 %)
    • 14

      Skill
      Active

      Persistent memory for Claude Code and 6 other CLI agents, stored as plain markdown in your Obsidian vault. Stop re-explaining your projects, decisions and people every session. 45 commands: hybrid semantic search, self-rewriting notes,…

      PythonLicense: MIT
      • agent-skills
      • ai-agents
      • ai-note-taking
      • ai-second-brain
      • anthropic

      githubmeasured growthOpen source ↗

      Install git clone https://github.com/eugeniughelbur/obsidian-second-brain ~/.claude/skills/obsidian-second-brain

      4 314GitHub stars+73 (+1.7 %)
    • 15

      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 808GitHub stars+12 (+0.32 %)
    • 16

      App
      Active

      World's first open-source enterprise world model.

      RustLicense: Apache-2.0
      • agent-memory
      • bitemporal
      • graphrag
      • knowledge-base
      • knowledge-graph

      githubmeasured growthOpen source ↗

      3 799GitHub stars+2 967 (+356.6 %)
    • 17

      Agent
      Active

      AI-powered virtual executive team — a single coherent executive persona backed by 8 specialist Claude agents (FastAPI + Next.js).

      Python
      • ai
      • anthropic
      • claude
      • fastapi
      • llm

      githubmeasured growthOpen source ↗

      3 652GitHub stars+1 125 (+44.5 %)
    • 18

      MCP
      Active

      MCP server for local codebase indexing, semantic search, and code dependency graphs.

      ↓ 1 242 downloads/weekTypeScriptLicense: AGPL-3.0

        mcpmeasured growthOpen source ↗

        Install claude mcp add socraticode -- npx socraticode

        3 275GitHub starsstable
      • 19

        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 %)
      • 20

        Skill
        Active

        Agent Skills for NVIDIA products — install into Claude Code, Codex, and other coding agents to run Physical AI, robotics, simulation, CUDA, and RAG workflows end to end.

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

        githubmeasured growthOpen source ↗

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

        3 194GitHub stars+61 (+1.9 %)
      • 21

        MCP
        Active

        Search arXiv papers, download full text, semantic search, citation graphs, and alerts via MCP.

        PythonLicense: Apache-2.0

          mcpmeasured growthOpen source ↗

          Install claude mcp add arxiv-mcp-server -- uvx arxiv-mcp-server

          3 091GitHub starsstable
        • 22

          Skill
          Active

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

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

          githubmeasured growthOpen source ↗

          Install /plugin marketplace add zilliztech/memsearch

          2 560GitHub stars+32 (+1.3 %)
        • 23

          Other
          Active

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

          TypeScriptLicense: Apache-2.0
          • ai-agents
          • bm25
          • cli
          • code-search
          • full-text-search

          githubestimated momentumOpen source ↗

          2 174GitHub stars—
        • 24

          MCP
          Active

          A Go framework for building production agent systems with graph workflows, tools, memory, A2A, AG-UI, MCP, evaluation, and observability.

          GoLicense: Apache-2.0
          • a2a
          • a2a-protocol
          • ag-ui
          • agent
          • agent-framework

          githubmeasured growthOpen source ↗

          1 763GitHub stars+16 (+0.92 %)
        • 25

          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 594GitHub stars+6 (+0.38 %)