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

Activity

Sort by

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

    MCP
    Dormant

    MCP server for Obsidian Smart Connections. Semantic search using your vault's embeddings.

    ↓ 42 downloads/weekTypeScriptLicense: MIT

      mcpmeasured growthOpen source ↗

      Install claude mcp add smart-connections -- npx @gogogadgetbytes/smart-connections-mcp

      3GitHub starsstable
    • 2

      MCP
      Active

      Local-first second brain with semantic search. Markdown notes indexed by a local ML model.

      ↓ 49 downloads/weekTypeScriptLicense: MIT

        mcpmeasured growthOpen source ↗

        Install claude mcp add memex -- npx @evan-moon/memex

        3GitHub starsstable
      • 3

        MCP
        Dormant

        Sourcegraph code search, semantic search, go-to-definition, find-references, and diff search.

        mcpmeasured growthOpen source ↗

        Remote server, to be declared in the MCP configuration https://{sourcegraph_hostname}/.api/mcp

        14GitHub starsstable
      • 4

        MCP
        Active

        Semantic search over WSO2 docs (APIM, MI, Choreo, Ballerina) via RAG and pgvector.

        ↓ 188 downloads/weekTypeScriptLicense: Apache-2.0

          mcpmeasured growthOpen source ↗

          Install claude mcp add wso2-docs-mcp-server -- npx wso2-docs-mcp-server

          3GitHub starsstable
        • 5

          Other
          Active

          Zilliz Cloud plugin for Claude Code & OpenAI Codex — manage clusters, collections, vector search, backups, and more through natural language.

          License: Apache-2.0
          • claude-code
          • claude-code-skill
          • codex
          • openai
          • plugin

          githubmeasured growthOpen source ↗

          3GitHub starsstable
        • 6

          Skill
          Active

          ShellBrain. Long-term memory for AI.

          Python
          • agent-memory
          • agi
          • ai
          • ai-memory
          • artificial-intelligence

          githubmeasured growthOpen source ↗

          Install git clone https://github.com/cucupac/shellbrain ~/.claude/skills/shellbrain

          13GitHub starsstable
        • 7

          Agent
          Dormant

          Agent-as-a-Tool: An infinite-scale AI orchestration framework solving Tool Space Interference (TSI) via dynamic agent injection, RAG-based Agent Bank, and Zero-Trust execution using Google ADK.

          TypeScript
          • a2a
          • agent-orchestration
          • agent-to-agent
          • ai-agents
          • gemini-api

          githubmeasured growthOpen source ↗

          3GitHub starsstable
        • 8

          Skill
          Dormant

          LLM-maintained personal wiki for Claude Code. Active librarian: ingest, synthesize, cross-link, remind.

          ShellLicense: MIT
          • claude-code
          • claude-code-plugin
          • knowledge-base
          • llm
          • rag

          githubmeasured growthOpen source ↗

          Install /plugin marketplace add deepfounder-ai/llm-wiki

          13GitHub starsstable
        • 9

          Skill
          Active

          官方简体中文 Agent Skills for SearchCans SERP API、Reader API 与 Account API：深度研究、SEO/GEO 内容差距分析与网页提取审计。

          PythonLicense: Apache-2.0
          • agent-skills
          • ai-agents
          • chinese
          • claude-code-skills
          • claude-skills

          githubmeasured growthOpen source ↗

          Install git clone https://github.com/SearchCans/searchcans-skills-zh ~/.claude/skills/searchcans-skills-zh

          3GitHub starsstable
        • 10

          Agent
          Active

          AI agent that plays a city quest game using MCP, A2A, RAG, and memory. Built with Microsoft Agent Framework and Azure OpenAI

          PythonLicense: MIT
          • agent-to-agent
          • ai-agents
          • azure-ai-search
          • azure-openai
          • mcp

          githubmeasured growthOpen source ↗

          3GitHub starsstable
        • 11

          MCP
          Dormant

          Cross-session memory for AI agents - knowledge graph, scoring, semantic search

          ↓ 292 downloads/weekTypeScriptLicense: MIT

            mcpmeasured growthOpen source ↗

            Install claude mcp add agent-knowledge -- npx agent-knowledge

            13GitHub starsstable
          • 12

            Skill
            Active

            Manage stateful, persistent agent workloads with Cloudflare Durable Objects for efficient, scalable real-time communication and scheduling.

            TypeScriptLicense: MIT
            • agentic-framework
            • agentic-rag
            • agents
            • ai-agents
            • autogen

            githubmeasured growthOpen source ↗

            Install /plugin marketplace add pertamaxxx/agents

            3GitHub starsstable
          • 13

            MCP
            Active

            Graph context, semantic search, guarded edits, and reviewable Git for local Obsidian vaults.

            ↓ 123 downloads/weekTypeScriptLicense: MIT

              mcpmeasured growthOpen source ↗

              Install claude mcp add obsidian-everywhere -- npx obsidian-everywhere

              13GitHub starsstable
            • 14

              Other
              Dormant

              Build an autonomous supply chain with Gemini 3 Flash Code Execution & AlloyDB AI ScaNN. Deterministic vision + semantic search + A2A protocol.

              PythonLicense: Apache-2.0
              • a2a-protocol
              • alloydb
              • gemini-3-flash
              • generative-ai
              • google-cloud

              githubmeasured growthOpen source ↗

              3GitHub starsstable
            • 15

              MCP
              Active

              Remote ChromaDB vector database MCP server with streamable HTTP transport

              TypeScriptLicense: MIT

                mcpmeasured growthOpen source ↗

                Remote server, to be declared in the MCP configuration https://meloncafe.github.io/chromadb-remote-mcp/mcp

                12GitHub starsstable
              • 16

                Agent
                Abandoned

                LeapRAG is an open-source platform that integrates advanced RAG technology with Google’s A2A protocol, enabling users to build context-aware, data-driven agents. These agents are automatically A2A-compliant and can be discovered and used by…

                PythonLicense: Apache-2.0
                • a2a
                • a2a-protocol
                • agent-to-agent
                • agents
                • chatgpt

                githubmeasured growthOpen source ↗

                3GitHub starsstable
              • 17

                MCP
                Active

                Calibre ebook library server: search, read content, curate metadata, semantic search, gated writes.

                ↓ 122 downloads/weekTypeScriptLicense: MIT

                  mcpmeasured growthOpen source ↗

                  Install claude mcp add calibre-mcp -- npx calibre-mcp

                  12GitHub starsstable
                • 18

                  MCP
                  Dormant

                  Local-first MCP server: semantic search over library docs. No cloud, no API key, no telemetry.

                  GoLicense: Apache-2.0

                    mcpmeasured growthOpen source ↗

                    3GitHub starsstable
                  • 19

                    MCP
                    Active

                    The enterprise-grade CrewAI alternative for Go. Orchestrate strictly-typed, parallel AI agents with LangGraph-style Flow persistence, distributed A2A protocols, Model Context Protocol (MCP), and Human-in-the-Loop training.

                    GoLicense: MIT
                    • a2a
                    • a2a-protocol
                    • agentic-framework
                    • agentic-rag
                    • agentic-workflow

                    githubmeasured growthOpen source ↗

                    11GitHub starsstable
                  • 20

                    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 starsstable
                    • 21

                      MCP
                      Dormant

                      Persistent semantic memory for AI agents using local ChromaDB vector search. No cloud required.

                      PythonLicense: MIT

                        mcpmeasured growthOpen source ↗

                        3GitHub starsstable
                      • 22

                        MCP
                        Dormant

                        RedM / RDR3 docs MCP server: native lookups, semantic search, VORP, RSGCore, oxmysql.

                        mcpmeasured growthOpen source ↗

                        Remote server, to be declared in the MCP configuration https://redm-mcp.fivem.no/mcp

                        3GitHub starsstable
                      • 23

                        MCP
                        Active

                        Persistent memory for AI assistants with semantic search and knowledge graph relationships.

                        RustLicense: Apache-2.0

                          mcpmeasured growthOpen source ↗

                          Install claude mcp add octobrain -- npx @muvon/octobrain

                          11GitHub starsstable
                        • 24

                          MCP
                          Active

                          Encrypted-first embedded database with vector search and agent memory, exposed as MCP tools

                          RustLicense: Apache-2.0

                            mcpmeasured growthOpen source ↗

                            Install claude mcp add mcp -- uvx citadeldb-mcp

                            3GitHub starsstable
                          • 25

                            MCP
                            Active

                            Persistent local AI memory. SQLite + FTS5 + vector search, knowledge graph. No cloud, no API keys.

                            ↓ 59 downloads/weekTypeScriptLicense: MIT

                              mcpmeasured growthOpen source ↗

                              Install claude mcp add local-memory-mcp -- npx @studiomeyer/local-memory-mcp

                              11GitHub starsstable