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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116 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

    Skill
    Active

    Cognee is the open-source AI memory platform for agents. Give your AI agents persistent long-term memory across sessions with a self-hosted knowledge graph engine.

    PythonLicense: Apache-2.0
    • agent-memory
    • agent-skills
    • ai
    • ai-agents
    • ai-memory

    githubmeasured growthOpen source ↗

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

    30 405GitHub stars+105 (+0.35 %)
  2. 2

    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 172GitHub stars+53 (+1.7 %)
  3. 3

    App
    Active

    Open Source AI Platform - AI Chat with advanced features that works with every LLM

    Python
    • ai
    • ai-chat
    • chatgpt
    • chatui
    • enterprise-search

    githubmeasured growthOpen source ↗

    31 898GitHub stars+99 (+0.31 %)
  4. 4

    Skill
    Active

    全流程 智能招投标 Agent：标书生成 · 招投标解读 · 标书检查 · 标书文档ai排版 · 商机发现 一键完成。 21 项合规检查 · 多模型切换 · RAG 知识库 · OCR 抽取。 从招标公告到可交付 docx 文档，全流程 AI 自动化。

    PythonLicense: AGPL-3.0
    • agent-skills
    • agentic-workflow
    • ai-agent
    • bid-management
    • bidding

    githubmeasured growthOpen source ↗

    Install git clone https://github.com/guangshu100/BidMaster-Pro ~/.claude/skills/BidMaster-Pro

    233GitHub stars+17 (+7.9 %)
  5. 5

    Other
    Active

    Milvus is a high-performance, cloud-native vector database built for scalable vector ANN search

    GoLicense: Apache-2.0
    • anns
    • cloud-native
    • diskann
    • distributed
    • embedding-database

    githubmeasured growthOpen source ↗

    45 938GitHub stars+100 (+0.22 %)
  6. 6

    Other
    Active

    【低代码v2.0，一句话即可生成整个系统】企业级AI低代码平台，一键生成前后端代码甚至整个系统。 AI Skills 一句话画流程、设计表单、生成报表、大屏。内置 AI应用平台涵盖：AI聊天、知识库、流程编排、MCP插件等，兼容主流大模型。引领AI低代码「Skills 生成 → 在线配置 → 代码生成 → 手工合并->AI修改」开发模式，解决 Java 项目 90% 重复工作，提高效率又不失灵活。

    JavaLicense: Apache-2.0
    • activiti
    • agent
    • ai
    • antd
    • claude-code

    githubmeasured growthOpen source ↗

    47 595GitHub stars+89 (+0.19 %)
  7. 7

    MCP
    Active

    Semantic search and pattern discovery for Obsidian and markdown vaults.

    TypeScript

      mcpmeasured growthOpen source ↗

      59GitHub stars+7 (+13.5 %)
    • 8

      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 591GitHub stars+62 (+0.40 %)
    • 9

      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 693GitHub stars+58 (+0.26 %)
    • 10

      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 400GitHub stars+54 (+0.20 %)
    • 11

      Agent
      Active

      FastGPT is a knowledge-based platform built on the LLMs, offers a comprehensive suite of out-of-the-box capabilities such as data processing, RAG retrieval, and visual AI workflow orchestration, letting you easily develop and deploy complex…

      TypeScript
      • agent
      • claude
      • deepseek
      • llm
      • mcp

      githubmeasured growthOpen source ↗

      29 548GitHub stars+55 (+0.19 %)
    • 12

      Other
      Active

      Sim is the collaborative workspace to build, deploy, and monitor AI agents and workflows. Used by 100,000+ builders.

      TypeScriptLicense: Apache-2.0
      • agent-workflow
      • agentic-workflow
      • agents
      • ai
      • aiagents

      githubmeasured growthOpen source ↗

      29 529GitHub stars+49 (+0.17 %)
    • 13

      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 546GitHub stars+27 (+1.1 %)
    • 14

      MCP
      Active

      Pay-per-use IBM Granite AI via x402: chat, code, embeddings, forecasting. USDC on Base or Solana.

      JavaScriptLicense: Apache-2.0

        mcpmeasured growthOpen source ↗

        Remote server, to be declared in the MCP configuration https://three.ws/api/ibm-mcp

        105GitHub stars+7 (+7.1 %)
      • 15

        MCP
        Active

        Alibaba Cloud DashScope MCP: Qwen chat, embeddings, and model discovery on your own account.

        ↓ 84 downloads/weekJavaScriptLicense: Apache-2.0

          mcpmeasured growthOpen source ↗

          Install claude mcp add alibaba-cloud -- npx @three-ws/alibaba-cloud-mcp

          105GitHub stars+7 (+7.1 %)
        • 16

          MCP
          Active

          IBM watsonx.ai MCP by three.ws: chat, text generation, embeddings, and tokenization.

          ↓ 73 downloads/weekJavaScriptLicense: Apache-2.0

            mcpmeasured growthOpen source ↗

            Install claude mcp add ibm-watsonx -- npx @three-ws/ibm-watsonx-mcp

            105GitHub stars+7 (+7.1 %)
          • 17

            MCP
            Active

            x402 pay-per-use IBM Granite AI: chat, code, embeddings, analysis, forecasting. Pay USDC per call.

            ↓ 70 downloads/weekJavaScriptLicense: Apache-2.0

              mcpmeasured growthOpen source ↗

              Install claude mcp add ibm-x402-mcp -- npx @three-ws/ibm-x402-mcp

              105GitHub stars+7 (+7.1 %)
            • 18

              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 stars+26 (+0.85 %)
              • 19

                MCP
                Active

                Calibre ebook library server: search, read content, curate metadata, semantic search, gated writes.

                ↓ 191 downloads/weekTypeScriptLicense: MIT

                  mcpmeasured growthOpen source ↗

                  Install claude mcp add calibre-mcp -- npx calibre-mcp

                  12GitHub stars+2 (+20.0 %)
                • 20

                  Library
                  Active

                  Opiniated RAG for integrating GenAI in your apps 🧠 Focus on your product rather than the RAG. Easy integration in existing products with customisation! Any LLM: GPT4, Groq, Llama. Any Vectorstore: PGVector, Faiss. Any Files. Anyway you…

                  Python
                  • ai
                  • api
                  • chatbot
                  • chatgpt
                  • database

                  githubmeasured growthOpen source ↗

                  39 475GitHub stars+37 (+0.09 %)
                • 21

                  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 453GitHub stars+32 (+0.28 %)
                • 22

                  Skill
                  Active

                  Give your AI a real, persistent memory. The open-source system plus templates that turn an Obsidian vault into your AI's working memory. No vector database, just markdown.

                  • agent-memory
                  • ai
                  • ai-agents
                  • ai-memory
                  • anthropic

                  githubmeasured growthOpen source ↗

                  Install git clone https://github.com/jaredrhod/ai-memory-vault ~/.claude/skills/ai-memory-vault

                  605GitHub stars+13 (+2.2 %)
                • 23

                  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 759GitHub stars+18 (+1.0 %)
                • 24

                  MCP
                  Active

                  Codebase understanding for AI coding agents — symbol graph, blast radius, semantic search.

                  GoLicense: MIT

                    mcpmeasured growthOpen source ↗

                    35GitHub stars+3 (+9.4 %)

                  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

                    ai-engineering-hub

                    Agent
                    ActiveOpen source ↗

                    In-depth tutorials on LLMs, RAGs and real-world AI agent applications.

                    Jupyter NotebookLicense: MIT
                    • agents
                    • ai
                    • llms
                    • machine-learning
                    • mcp
                    githubResourcemeasured growth
                    37 263GitHub stars+63 (+0.17 %)