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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146 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

    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 %)
  2. 2

    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 %)
  3. 3

    App
    Active

    User-friendly AI Interface (Supports Ollama, OpenAI API, ...)

    Python
    • ai
    • llm
    • llm-ui
    • llm-webui
    • llms

    githubmeasured growthOpen source ↗

    150 860GitHub stars+599 (+0.40 %)
  4. 4

    MCP
    Active

    Compress tool outputs, logs, files, and RAG chunks before they reach the LLM. 20% fewer tokens for coding agents, 60-95% fewer tokens for JSON, same answers. Library, proxy, MCP server.

    PythonLicense: Apache-2.0
    • agent
    • ai
    • anthropic
    • claude-code
    • compression

    githubmeasured growthOpen source ↗

    68 835GitHub stars+901 (+1.3 %)
  5. 5

    Agent
    Active

    The agent engineering platform.

    PythonLicense: MIT
    • agents
    • ai
    • ai-agents
    • anthropic
    • chatgpt

    githubmeasured growthOpen source ↗

    145 605GitHub stars+391 (+0.27 %)
  6. 6

    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 %)
  7. 7

    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 %)
  8. 8

    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 916GitHub stars+101 (+0.32 %)
  9. 9

    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 %)
  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

    Skill
    Active

    Turn any codebase, with its docs, SQL schemas, configs, and PDFs, into a queryable knowledge graph. A /graphify skill for Claude Code, Cursor, Codex, and Gemini CLI: local deterministic AST parsing, every edge explained, no vector store.

    PythonLicense: Apache-2.0
    • ai-agents
    • antigravity
    • ast
    • claude-code
    • code-analysis

    githubmeasured growthOpen source ↗

    Install git clone https://github.com/Graphify-Labs/graphify ~/.claude/skills/graphify

    114 470GitHub stars+2 426 (+2.2 %)
  12. 12

    Agent
    Active

    RAGFlow is a leading open-source Retrieval-Augmented Generation (RAG) engine that fuses cutting-edge RAG with Agent capabilities to create a superior context layer for LLMs

    GoLicense: Apache-2.0
    • agent-harness
    • agentic-ai
    • agentic-retrieval
    • agentic-search
    • ai

    githubmeasured growthOpen source ↗

    90 012GitHub stars+467 (+0.52 %)
  13. 13

    Skill
    Active

    Persistent Context Across Sessions for Every Agent – Captures everything your agent does during sessions, compresses it with AI, and injects relevant context back into future sessions. Works with Claude Code, OpenClaw, Codex, Gemini,…

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

    githubmeasured growthOpen source ↗

    Install /plugin marketplace add thedotmack/claude-mem

    93 119GitHub stars+594 (+0.64 %)
  14. 14

    Model
    Active

    21 Lessons, Get Started Building with Generative AI

    Jupyter NotebookLicense: MIT
    • ai
    • azure
    • chatgpt
    • dall-e
    • generative-ai

    githubmeasured growthOpen source ↗

    119 116GitHub stars+395 (+0.33 %)
  15. 15

    MCP
    Active

    Create, search, and update notes in an xNotepad AI notebook, with semantic search and AI Q&A.

    TypeScriptLicense: MIT

      mcpmeasured growthOpen source ↗

      Remote server, to be declared in the MCP configuration https://www.xnotepadai.com/api/mcp/

      0GitHub starsstable
    • 16

      Skill
      Active

      Local-first AI knowledge app and Agent Skill with evidence-backed Wiki, an interactive knowledge universe, Viki Q&A, and shareable knowledge galaxies.

      JavaScriptLicense: MIT
      • agent-skills
      • ai-agents
      • ai-assistant
      • claude-code
      • codex

      githubmeasured growthOpen source ↗

      Install git clone https://github.com/NimaChu/my-wiki ~/.claude/skills/my-wiki

      123GitHub starsstable
    • 17

      MCP
      Active

      Semantic search across 50,000+ food recipes with hybrid retrieval and reranking.

      PythonLicense: MIT

        mcpmeasured growthOpen source ↗

        Remote server, to be declared in the MCP configuration https://recipes.aidatanorge.no/mcp

        1GitHub starsstable
      • 18

        MCP
        Dormant

        Secure Retrieval-Augmented Generation (RAG) with role-based access control using Mastra AI orchestration, with JWT Secure, also Deep Research built with Cedar & Next.js. Gemini, OpenAI, Openrouter, & Gemini CLI usable. Also exposes tools,…

        TypeScript
        • a2a
        • a2a-mcp
        • a2a-protocol
        • ai
        • ai-agents

        githubmeasured growthOpen source ↗

        18GitHub starsstable
      • 19

        Skill
        Active

        Laravel AI skills that actually know when to stay out of the way. 72 focused skills, smarter sparse routing, automatic project memory, and better specialist selection for Codex, Claude Code, and other AI coding assistants.

        JavaScriptLicense: MIT
        • ai
        • ai-agent
        • ai-agents
        • ai-skill
        • ai-skills

        githubmeasured growthOpen source ↗

        Install git clone https://github.com/soden46/syarif-laravel-ai-skills ~/.claude/skills/syarif-laravel-ai-skills

        4GitHub starsstable
      • 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

        Skill
        Active

        10 skills that cut your AI bill with proof instead of vibes. MIT, works in Claude Code, Codex, Cursor. Every skill's check is executed by CI.

        JavaScript
        • agents
        • ai-agents
        • claude-code
        • claude-skills
        • codex

        githubmeasured growthOpen source ↗

        Install git clone https://github.com/Neeeophytee/ai-cost-cutter-skills ~/.claude/skills/ai-cost-cutter-skills

        18GitHub starsstable
      • 22

        MCP
        Active

        Local-first memory for coding agents — MCP server, single SQLite file, local embeddings

        RustLicense: MIT

          mcpmeasured growthOpen source ↗

          4GitHub starsstable

        Listed without a public metric

        Mixed ranking: measured growth takes priority; entries without two snapshots are estimated. 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
          UnknownLast commit: unavailable

          GitHub repository vectorizer and context synthesizer for RAG pipelines.

          mcpmetric not publishedOpen source ↗

          Remote server, to be declared in the MCP configuration https://repo-to-rag-mcp.vercel.app/api/mcp

          —No public metric provided
        2. 2

          MCP
          UnknownLast commit: unavailable

          Bi-temporal AI memory. 56 tools, knowledge graph, semantic search. EU-hosted, free tier.

          mcpmetric not publishedOpen source ↗

          Remote server, to be declared in the MCP configuration https://memory.studiomeyer.io/mcp

          —No public metric provided
        3. 3

          MCP
          UnknownLast commit: unavailable

          Study the Bible in its original Hebrew and Greek — semantic search, word studies, cross-references,

          mcpmetric not publishedOpen source ↗

          Remote server, to be declared in the MCP configuration https://bible.mctx.ai/v1.3.4

          —No public metric provided