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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137 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

    Self improving agents through iterations

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

    githubmeasured growthOpen source ↗

    104GitHub starsstable
  2. 2

    MCP
    Active

    Alibaba Cloud DashScope MCP: Qwen chat, embeddings, and model discovery on your own account.

    ↓ 84 downloads/weekJavaScriptLicense: Apache-2.0

      mcpmeasured growthOpen source ↗

      Install claude mcp add alibaba-cloud -- npx @three-ws/alibaba-cloud-mcp

      105GitHub starsstable
    • 3

      MCP
      Active

      IBM watsonx.ai MCP by three.ws: chat, text generation, embeddings, and tokenization.

      ↓ 73 downloads/weekJavaScriptLicense: Apache-2.0

        mcpmeasured growthOpen source ↗

        Install claude mcp add ibm-watsonx -- npx @three-ws/ibm-watsonx-mcp

        105GitHub starsstable
      • 4

        MCP
        Active

        x402 pay-per-use IBM Granite AI: chat, code, embeddings, analysis, forecasting. Pay USDC per call.

        ↓ 70 downloads/weekJavaScriptLicense: Apache-2.0

          mcpmeasured growthOpen source ↗

          Install claude mcp add ibm-x402-mcp -- npx @three-ws/ibm-x402-mcp

          105GitHub starsstable
        • 5

          Skill
          Active

          Lightweight Doc-to-agent-ready knowledge pipeline. Three-stage Bronze→Silver→Gold architecture extracts structured elements, page content, and AI-enriched metadata from research papers and books. Generate PRDs, workflows, topic clusters,…

          Python
          • agent-use-ready
          • ai-agents
          • claude-code
          • claude-skills
          • doc-converter

          githubmeasured growthOpen source ↗

          Install git clone https://github.com/agentii-ai/DocMeld ~/.claude/skills/DocMeld

          100GitHub starsstable
        • 6

          Agent
          Active

          🚀 Way Back Home

          PythonLicense: Apache-2.0
          • a2a
          • adk
          • agents
          • bigquery
          • google-cloud

          githubmeasured growthOpen source ↗

          96GitHub starsstable
        • 7

          MCP
          Active

          Cross-platform persistent memory MCP for Codex, Gemini CLI, Claude Code, and other local MCP hosts. 36 cited neuroscience mechanisms, local-first SQLite/PostgreSQL, hybrid retrieval, decay-based consolidation, and reproducible benchmarks.…

          PythonLicense: MIT
          • agent-memory-system
          • agent-skills
          • causal-inference
          • claude-code
          • codex

          githubmeasured growthOpen source ↗

          71GitHub starsstable
        • 8

          Skill
          Active

          The official Pinecone marketplace for Claude Code Plugins

          PythonLicense: MIT
          • anthropic-claude
          • claude-code
          • claude-code-plugin
          • claude-code-plugin-marketplace
          • hybrid-search

          githubmeasured growthOpen source ↗

          Install /plugin marketplace add pinecone-io/pinecone-claude-code-plugin

          68GitHub starsstable
        • 9

          MCP
          Active

          Local-first MCP memory server: SQLite, FTS5 and vector search, AES-256-GCM. 55 tools, no cloud.

          RustLicense: MIT

            mcpmeasured growthOpen source ↗

            67GitHub starsstable
          • 10

            MCP
            Active

            Token-efficient code review knowledge graph: semantic search and call-graph resolution.

            PythonLicense: Apache-2.0

              mcpmeasured growthOpen source ↗

              Install claude mcp add better-code-review-graph -- uvx better-code-review-graph

              66GitHub starsstable
            • 11

              Skill
              Active

              Agent skills for LandingAI's Agentic Document Extraction (ADE) — production-ready document AI for agentic coding assistants

              License: MIT
              • ade
              • agent-skills
              • claude
              • document-extraction
              • document-processing

              githubmeasured growthOpen source ↗

              Install git clone https://github.com/landing-ai/ade-document-processing-skills ~/.claude/skills/ade-document-processing-skills

              64GitHub starsstable
            • 12

              MCP
              Active

              Semantic search and pattern discovery for Obsidian and markdown vaults.

              TypeScript

                mcpmeasured growthOpen source ↗

                59GitHub starsstable
              • 13

                Skill
                Active

                Own your LLM's web search: a local search->fetch->rank pipeline that replaces hosted web-search tools. Measured: matches hosted accuracy at 66% lower cost and up to 88% fewer tokens, plus a precision-tuned semantic caching with…

                PythonLicense: MIT
                • agent-memory
                • agent-skills
                • agentic-workflow
                • agents
                • anthropic

                githubmeasured growthOpen source ↗

                Install git clone https://github.com/firish/webfetch ~/.claude/skills/webfetch

                55GitHub starsstable
              • 14

                MCP
                Active

                Local semantic search over Obsidian vaults via Smart Connections embeddings. Multi-vault, private.

                TypeScriptLicense: MIT

                  mcpmeasured growthOpen source ↗

                  Install claude mcp add smart-connections-mcp -- npx smart-connections-mcp

                  54GitHub starsstable
                • 15

                  Skill
                  Active

                  Semantic Scholar API wrapper for agents — search 200M+ papers, traverse citations, find authors. Python, rate-limited, multi-agent.

                  PythonLicense: MIT
                  • academic
                  • agent-skill
                  • agent-skills
                  • citations
                  • claude-code

                  githubmeasured growthOpen source ↗

                  Install git clone https://github.com/Agents365-ai/semanticscholar-skill ~/.claude/skills/semanticscholar-skill

                  68GitHub starsstable
                • 16

                  MCP
                  Active

                  Pure instruction-pack skill wrapping Ai2's Asta MCP server (Semantic Scholar). Intent-to-tool routing, safe defaults, multi-agent.

                  License: MIT
                  • academic
                  • agent-skill
                  • agent-skills
                  • asta
                  • asta-skill

                  githubmeasured growthOpen source ↗

                  183GitHub starsstable
                • 17

                  Skill
                  Active

                  A LangGraph-powered multi-agent deep research system featuring task planning, human-in-the-loop review, multi-source retrieval, evidence-grounded report generation, full tracing and reproducible evaluation.

                  PythonLicense: MIT
                  • agent
                  • agent-skills
                  • agentic-workflow
                  • langgraph
                  • llm

                  githubmeasured growthOpen source ↗

                  Install git clone https://github.com/hwfengcs/SDYJ_Multi_Agents ~/.claude/skills/SDYJ_Multi_Agents

                  50GitHub starsstable
                • 18

                  CLI
                  Active

                  Rust-powered code intelligence CLI for AI coding agents. Builds call graphs and hybrid semantic search indexes (Dense + Sparse + RRF + Reranker) across 7 languages. Ships as native MCP tools for Claude Code and Codex CLI.

                  RustLicense: MIT
                  • agent-tools
                  • ai-development-tools
                  • ai-tools
                  • bm25
                  • call-graph

                  githubmeasured growthOpen source ↗

                  764GitHub stars-1 (-0.13 %)
                • 19

                  Library
                  UnknownLast commit: unavailable

                  Embeddings, Retrieval, and Reranking

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

                  pypimeasured growthOpen source ↗

                  Install pip install sentence-transformers

                  5 340 106downloads over 7 days-795 607 (-13.0 %)
                • 20

                  Library
                  UnknownLast commit: unavailable

                  Interface between LLMs and your data

                  • LLM
                  • NLP
                  • RAG
                  • data
                  • devtools

                  pypimeasured growthOpen source ↗

                  Install pip install llama-index

                  781 161downloads over 7 days-206 854 (-20.9 %)
                • 21

                  Library
                  UnknownLast commit: unavailable

                  Typescript bindings for langchain

                  • llm
                  • ai
                  • gpt3
                  • chain
                  • prompt

                  npmmeasured growthOpen source ↗

                  Install npm install langchain

                  1 918 070downloads over 7 days-677 690 (-26.1 %)

                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 starsstable
                2. 2

                  membrane

                  Skill
                  ActiveOpen source ↗

                  A selective learning and memory substrate for agentic systems — typed, revisable, decayable memory with competence learning and trust-aware retrieval.

                  GoLicense: MIT
                  • agent
                  • agent-framework
                  • agent-memory
                  • agent-skills
                  • agentic
                  github

                  Install git clone https://github.com/BennettSchwartz/membrane ~/.claude/skills/membrane

                  Resourcemeasured growth
                  94GitHub starsstable
                3. 3

                  claude-memory

                  Other
                  DormantOpen source ↗

                  Persistent memory for Claude Code. Auto-capture decisions, learnings, client info. Cloud backup to Supabase. Never lose context again. Free alternative to Mem.ai, Rewind AI, Personal AI.

                  PythonLicense: MIT
                  • ai-memory
                  • claude
                  • claude-code
                  • claude-code-skills
                  • claude-memory
                  githubResourcemeasured growth
                  14GitHub starsstable
                4. 4

                  spring-ai-recipes-learning

                  Agent
                  ActiveOpen source ↗

                  Spring AI 实战教程 🚀 ChatClient → RAG → MCP → Agent → A2A，24 个手写模块循序渐进（Spring Boot 4.1 + Spring AI 2.0 + Java 21）

                  Java
                  • a2a
                  • ai-agent
                  • chatclient
                  • gradle
                  • java
                  githubResourcemeasured growth
                  3GitHub starsstable