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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88 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

    MCP
    Active

    Minimal RAG-over-a-corpus MCP retrieval: search_knowledge returns cited chunks. Local embeddings.

    ↓ 17 downloads/weekPythonLicense: MIT

      mcpmeasured growthOpen source ↗

      Install claude mcp add rag-mcp -- uvx jaimenbell-rag-mcp

      0GitHub starsstable
    • 2

      MCP
      Abandoned

      MCP server for YandexGPT — completions, embeddings, classification, summarization (Russia)

      ↓ 36 downloads/weekTypeScriptLicense: MIT

        mcpmeasured growthOpen source ↗

        Install claude mcp add yandexgpt-mcp -- npx @theyahia/yandexgpt-mcp

        0GitHub starsstable
      • 3

        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 675GitHub stars+396 (+0.62 %)
      • 4

        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 815GitHub stars+271 (+0.25 %)
      • 5

        Other
        Active

        An intentionally vulnerable OWASP LLM Top 10 training platform for AI Security, Prompt Injection, RAG Security, Agent Security, and GenAI penetration testing.

        PythonLicense: MIT
        • agent-security
        • ai-security
        • ai-security-tool
        • artificial-intelligence
        • ctf

        githubmeasured growthOpen source ↗

        311GitHub stars+6 (+2.0 %)
      • 6

        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 %)
      • 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

        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 387GitHub stars+601 (+0.39 %)
      • 9

        Other
        Active

        Qdrant - High-performance, massive-scale Vector Database and Vector Search Engine for the next generation of AI. Also available in the cloud https://cloud.qdrant.io/

        RustLicense: Apache-2.0
        • ai-search
        • ai-search-engine
        • embeddings-similarity
        • hnsw
        • hybrid-search

        githubmeasured growthOpen source ↗

        34 377GitHub stars+127 (+0.37 %)
      • 10

        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 %)
      • 11

        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 %)
      • 12

        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 962GitHub stars+106 (+0.23 %)
      • 13

        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 %)
      • 14

        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 %)
      • 15

        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 %)
      • 16

        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 %)
      • 17

        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 %)
      • 18

        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 %)
      • 19

        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 %)
      • 20

        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 %)
      • 21

        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 %)
      • 22

        Agent
        Active

        The agent engineering platform.

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

        githubmeasured growthOpen source ↗

        145 605GitHub stars+391 (+0.27 %)
      • 23

        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 %)
      • 24

        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 %)

      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

        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 960GitHub stars+648 (+0.48 %)