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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125 entries in this view.

Tool ranking

Ranked by normalized popularity 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

    Agent
    Active

    The Memory Layer for AI Agents - Drop-in memory infrastructure for AI agents and apps. Context that persists. Built for production.

    PythonLicense: Apache-2.0
    • agentic-memory
    • agentic-memory-system
    • agents
    • ai
    • ai-agents

    githubmeasured growthOpen source ↗

    64 602GitHub stars+387 (+0.60 %)
  2. 2

    Other
    Active

    The Postgres development platform. Supabase gives you a dedicated Postgres database to build your web, mobile, and AI applications.

    TypeScriptLicense: Apache-2.0
    • ai
    • alternative
    • auth
    • database
    • deno

    githubmeasured growthOpen source ↗

    108 763GitHub stars+260 (+0.24 %)
  3. 3

    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 768GitHub stars+142 (+0.58 %)
  4. 4

    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 %)
  5. 5

    Other
    Active

    Build Agentic workflows, RAG pipelines, with rich AI model and tool support on one collaborative workspace. Deploy on cloud, VPC, or self-hosted, so teams move from prototype to production without rebuilding the stack.

    TypeScript
    • agent
    • agentic-ai
    • agentic-framework
    • agentic-workflow
    • ai

    githubmeasured growthOpen source ↗

    154 271GitHub stars+567 (+0.37 %)
  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 400GitHub stars+54 (+0.20 %)
  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 453GitHub stars+32 (+0.28 %)
  8. 8

    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 740GitHub stars+678 (+6.1 %)
  9. 9

    Agent
    Active

    The agent engineering platform.

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

    githubmeasured growthOpen source ↗

    145 536GitHub stars+378 (+0.26 %)
  10. 10

    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 629GitHub stars+784 (+1.2 %)
  11. 11

    App
    Active

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

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

    githubmeasured growthOpen source ↗

    150 749GitHub stars+584 (+0.39 %)
  12. 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. 13

    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 %)
  14. 14

    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 %)
  15. 15

    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 316GitHub stars+22 (+0.08 %)
  16. 16

    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 043GitHub stars+717 (+0.78 %)
  17. 17

    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 ↗

    89 937GitHub stars+518 (+0.58 %)
  18. 18

    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 054GitHub stars+2 404 (+2.2 %)
  19. 19

    Skill
    Active

    Turn any technical book PDF into a Claude Code skill — ready to study, reference, and use while you work.

    PythonLicense: MIT
    • agent-skills
    • ai-agents
    • book-to-skill
    • context-engineering
    • document-processing

    githubmeasured growthOpen source ↗

    Install git clone https://github.com/virgiliojr94/book-to-skill ~/.claude/skills/book-to-skill

    27 824GitHub stars+1 525 (+5.8 %)
  20. 20

    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 %)
  21. 21

    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 %)
  22. 22

    Other
    Active

    Stop renting your intelligence. Own it with AnythingLLM. Everything you need for a powerful local-first agent experience

    JavaScriptLicense: MIT
    • agent-computer
    • agent-harness
    • agent-orchestration
    • agentic-ai
    • ai-agents

    githubmeasured growthOpen source ↗

    65 486GitHub stars+178 (+0.27 %)
  23. 23

    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 %)
  24. 24

    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 %)

Learning resources

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

  1. 1

    awesome-llm-apps

    Skill
    ActiveOpen source ↗

    100+ AI Agents, Agent Skills and RAG Apps - Free and Open Source.

    PythonLicense: Apache-2.0
    • agents
    • llms
    • python
    • rag
    github

    Install git clone https://github.com/Shubhamsaboo/awesome-llm-apps ~/.claude/skills/awesome-llm-apps

    Resourcemeasured growth
    135 793GitHub stars+1 057 (+0.78 %)