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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117 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

    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 484GitHub stars+6 (+0.01 %)
  2. 2

    Other
    Active

    Nuwax Agent OS - An enterprise-grade AI Agent Development and Operation Platform - Providing a complete solution for agent creation and distribution, knowledge base management, model proxy, memory system, and plugin ecosystem.

    TypeScriptLicense: Apache-2.0
    • a2a
    • agent
    • agent-os
    • agent-sandbox
    • agentic

    githubmeasured growthOpen source ↗

    877GitHub stars+4 (+0.46 %)
  3. 3

    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 736GitHub stars+5 (+0.09 %)
  4. 4

    MCP
    Active

    USPTO patent creation system with MCP server + Claude Code plugin. Hybrid RAG search over MPEP/USC/CFR, BigQuery access to 76M+ patents, automated 35 USC 112 compliance checks, prior art search, diagram generation. GPU-accelerated with…

    PythonLicense: MIT
    • bigquery
    • claude-code
    • claude-code-plugin
    • faiss
    • mcp-server

    githubmeasured growthOpen source ↗

    177GitHub stars+2 (+1.1 %)
  5. 5

    MCP
    Active

    A semantic search engine for files and code.

    PythonLicense: MIT

      mcpmeasured growthOpen source ↗

      Install claude mcp add vexor -- uvx vexor

      239GitHub stars+2 (+0.84 %)
    • 6

      MCP
      Active

      AST knowledge graph MCP server for Claude Code — semantic search, call graph traversal, HTTP route tracing, impact analysis. Auto-indexes 10 languages via Tree-sitter.

      RustLicense: MIT
      • ast
      • call-graph
      • claude-code
      • claude-code-plugin
      • code-navigation

      githubmeasured growthOpen source ↗

      71GitHub stars+1 (+1.4 %)
    • 7

      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 %)
    • 8

      Skill
      Active

      Harness engineering applied to knowledge production: a self-evolving multi-agent newsroom that turns your documents into a cross-linked markdown wiki. A "reground" loop pulls published pages back in before they go stale — writer ≠ reviewer,…

      PythonLicense: MIT
      • agentic-ai
      • ai-agents
      • claude
      • claude-code
      • claude-skills

      githubmeasured growthOpen source ↗

      Install git clone https://github.com/alfadur7/llm-wiki-newsroom ~/.claude/skills/llm-wiki-newsroom

      80GitHub stars+1 (+1.3 %)
    • 9

      Agent
      Active

      BISHENG is an open LLM devops platform for next generation Enterprise AI applications. Powerful and comprehensive features include: GenAI workflow, RAG, Agent, Unified model management, Evaluation, SFT, Dataset Management, Enterprise-level…

      PythonLicense: Apache-2.0
      • agent
      • ai
      • chatbot
      • enterprise
      • finetune

      githubmeasured growthOpen source ↗

      11 923GitHub stars+3 (+0.03 %)
    • 10

      MCP
      Active

      MCP server for Claude Code and Codex. One tool call replaces ~42 minutes of agent exploration

      TypeScriptLicense: MIT
      • ai-agents
      • claude
      • claude-ai
      • claude-code
      • claude-code-plugin

      githubmeasured growthOpen source ↗

      102GitHub stars+1 (+0.99 %)
    • 11

      MCP
      Active

      Self improving agents through iterations

      PythonLicense: Apache-2.0
      • agent-learning
      • agent-memory
      • agentic-workflows
      • ai-agents
      • claude-code

      githubmeasured growthOpen source ↗

      105GitHub stars+1 (+0.96 %)
    • 12

      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 %)
    • 13

      Agent
      Active

      Ruby's capable AI runtime

      RubyLicense: MIT
      • a2a
      • a2a-client
      • agent
      • agent2agent
      • agents

      githubmeasured growthOpen source ↗

      138GitHub stars+1 (+0.73 %)
    • 14

      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 %)
    • 15

      MCP
      Active

      Semantic search across Sui documentation and knowledge sources, powered by kapa.ai

      RustLicense: Apache-2.0

        mcpmeasured growthOpen source ↗

        Remote server, to be declared in the MCP configuration https://sui.mcp.kapa.ai

        7 740GitHub stars+2 (+0.03 %)
      • 16

        MCP
        Active

        Cognitive memory for AI agents — semantic search, Hebbian learning, knowledge graphs.

        ↓ 85 downloads/weekRustLicense: Apache-2.0

          mcpmeasured growthOpen source ↗

          Install claude mcp add shodh-memory -- npx @shodh/memory-mcp

          276GitHub stars+1 (+0.36 %)
        • 17

          MCP
          Active

          Config-driven engine that turns JSON into production-grade AI agents. Multi-agent orchestration, 12+ LLM providers, MCP/A2A protocols, RAG, persistent memory, and enterprise compliance (EU AI Act, GDPR, HIPAA). Built on Quarkus.

          JavaLicense: Apache-2.0
          • a2a
          • ai-agents
          • ai-orchestration
          • chatbot
          • conversation-memory

          githubmeasured growthOpen source ↗

          372GitHub stars+1 (+0.27 %)
        • 18

          Library
          UnknownLast commit: unavailable

          Typescript bindings for langchain

          • llm
          • ai
          • gpt3
          • chain
          • prompt

          npmmeasured growthOpen source ↗

          Install npm install langchain

          1 997 384downloads over 7 days-22 207 (-1.1 %)
        • 19

          Library
          UnknownLast commit: unavailable

          Embeddings, Retrieval, and Reranking

          • Transformer Networks
          • BERT
          • XLNet
          • sentence embedding
          • PyTorch

          pypimeasured growthOpen source ↗

          Install pip install sentence-transformers

          5 313 257downloads over 7 days-1 809 510 (-25.4 %)
        • 20

          Library
          UnknownLast commit: unavailable

          Interface between LLMs and your data

          • LLM
          • NLP
          • RAG
          • data
          • devtools

          pypimeasured growthOpen source ↗

          Install pip install llama-index

          762 620downloads over 7 days-556 575 (-42.2 %)
        • 21

          Agent
          Active

          An event-driven framework designed to build and orchestrate multi-agent AI systems. It enables seamless integration of AI agents with real-world data sources and systems, facilitating complex, multi-step workflows.

          PythonLicense: Apache-2.0
          • a2a
          • agentframework
          • agentic
          • agentic-ai
          • agentic-framework

          githubmeasured growthOpen source ↗

          4 950GitHub stars-2 (-0.04 %)
        • 22

          Other
          Active

          The .NET library to build AI agents with 30+ built-in connectors.

          C#License: MIT
          • a2a
          • agent
          • agent-framework
          • agent-orchestration
          • agent2agent

          githubmeasured growthOpen source ↗

          638GitHub starsstable
        • 23

          MCP
          Active

          Local-first document management and semantic search for AI coding agents

          TypeScriptLicense: MIT

            mcpmeasured growthOpen source ↗

            Install claude mcp add mcp-documentation-server -- npx @andrea9293/mcp-documentation-server

            342GitHub starsstable
          • 24

            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 ↗

            254GitHub stars-3 (-1.2 %)

          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

            azure-openai-llm-notes

            Skill
            ActiveOpen source ↗

            A curated collection of resources for 🌌 Azure OpenAI, 🦙 LLMs (+RAG, Agents). Monthly Updates.

            Python
            • agent
            • agent-framework
            • agent-skills
            • ai-engineering
            • ai-tools
            github

            Install git clone https://github.com/kimtth/azure-openai-llm-notes ~/.claude/skills/azure-openai-llm-notes

            Resourcemeasured growth
            410GitHub stars+1 (+0.24 %)