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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115 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

    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 %)
  2. 2

    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 %)
  3. 3

    Skill
    Active

    ReachAI企业级智能体开发平台：快速、安全完成已有业务系统智能化改造，让 AI 在 OA、ERP、CRM 等原系统中查数据、填表单、办业务。ReachAI: Quickly and securely bring AI to existing enterprise systems, enabling AI to query data, fill out forms, and execute business tasks directly within OA, ERP,…

    JavaLicense: MIT
    • a2a
    • agent
    • agent-framework
    • agent-skills
    • agents

    githubmeasured growthOpen source ↗

    Install git clone https://github.com/w8123/EnterpriseAgentFramework ~/.claude/skills/EnterpriseAgentFramework

    670GitHub stars+69 (+11.5 %)
  4. 4

    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 561GitHub stars+67 (+0.23 %)
  5. 5

    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 %)
  6. 6

    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 %)
  7. 7

    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 491GitHub stars+53 (+0.13 %)
  8. 8

    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 537GitHub stars+48 (+0.16 %)
  9. 9

    Skill
    Active

    AI-agent skill producing reusable Markdown from PDFs. It turns flowcharts, diagrams, and charts into text beside each caption instead of empty links. It checks an earlier conversion against the PDF and fixes misread or missing parts. Long…

    PythonLicense: AGPL-3.0
    • agent-skills
    • ai-agents
    • codex
    • codex-skill
    • document-conversion

    githubmeasured growthOpen source ↗

    Install git clone https://github.com/libnyx/LT2MD ~/.claude/skills/LT2MD

    104GitHub stars+45 (+76.3 %)
  10. 10

    Other
    Active

    The #1 AI Harness for Building Resumes, PDFs, Cover Letters & more, locally with 100+ LLMs support.

    TypeScriptLicense: Apache-2.0
    • applicant-tracking-system
    • ats
    • hacktoberfest
    • machine-learning
    • natural-language-processing

    githubmeasured growthOpen source ↗

    28 328GitHub stars+34 (+0.12 %)
  11. 11

    MCP
    Active

    AURA is a production-tested SRE agent platform you can deploy in minutes. AURA handles the guardrails, APIs, state management, streaming, and failure handling required to put AI to work safely on production infrastructure.

    RustLicense: Apache-2.0
    • a2a
    • ai-agent-framework
    • ai-agents
    • ai-sre
    • aiops

    githubmeasured growthOpen source ↗

    291GitHub stars+33 (+12.8 %)
  12. 12

    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 %)
  13. 13

    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 %)
  14. 14

    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

    244GitHub stars+25 (+11.4 %)
  15. 15

    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

    615GitHub stars+23 (+3.9 %)
  16. 16

    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 %)
  17. 17

    Skill
    Active
    Python
    • agent
    • agent-memory
    • agent-skills
    • agentic
    • dsh-plugin

    githubmeasured growthOpen source ↗

    Install git clone https://github.com/mindscale-noah/MindMemOS ~/.claude/skills/MindMemOS

    975GitHub stars+13 (+1.4 %)
  18. 18

    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 %)
  19. 19

    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 %)
  20. 20

    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 %)
  21. 21

    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 487GitHub stars+9 (+0.02 %)
  22. 22

    MCP
    Active

    Google NotebookLM over MCP + a local HTTP REST API. Citation-backed Q&A, audio/video/content generation, multi-account rotation. For Claude Code, Codex, Cursor, n8n, Zapier, Make.

    TypeScriptLicense: MIT
    • agentic-skill
    • anthropic
    • automation
    • citations
    • claude-code

    githubmeasured growthOpen source ↗

    173GitHub stars+8 (+4.8 %)
  23. 23

    MCP
    Active

    Semantic search and pattern discovery for Obsidian and markdown vaults.

    TypeScript

      mcpmeasured growthOpen source ↗

      59GitHub stars+7 (+13.5 %)

    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+46 (+0.12 %)
    2. 2

      atlas-agent-control-plane

      Skill
      ActiveOpen source ↗

      AtlasAgent - an auditable AI agent control plane: evidence-backed memory, governed tool runtime, checkpoint DAG recovery, and a 55-chapter engineering tutorial. FastAPI / Next.js PWA / Textual TUI

      PythonLicense: MIT
      • agent
      • agent-framework
      • agent-orchestration
      • agent-skills
      • agentic-ai
      github

      Install git clone https://github.com/malevrigns/atlas-agent-control-plane ~/.claude/skills/atlas-agent-control-plane

      Resourcemeasured growth
      110GitHub stars+44 (+66.7 %)