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

    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 %)
  2. 2

    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 %)
  3. 3

    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 %)
  4. 4

    MCP
    Active

    MCP server for local codebase indexing, semantic search, and code dependency graphs.

    ↓ 1 242 downloads/weekTypeScriptLicense: AGPL-3.0

      mcpmeasured growthOpen source ↗

      Install claude mcp add socraticode -- npx socraticode

      3 275GitHub stars+12 (+0.37 %)
    • 5

      MCP
      Active

      Universal MCP Server with advanced AI memory capabilities and semantic search.

      ↓ 913 downloads/weekPythonLicense: Apache-2.0

        mcpmeasured growthOpen source ↗

        Install claude mcp add marm-mcp-server -- uvx marm-mcp-server

        339GitHub stars+4 (+1.2 %)
      • 6

        MCP
        Active

        Local repo context for coding assistants with semantic search and graph relationships.

        ↓ 392 downloads/weekJavaScript

          mcpmeasured growthOpen source ↗

          Install claude mcp add cortex -- npx @danielblomma/cortex-mcp

          18GitHub starsstable
        • 7

          MCP
          Active

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

          ↓ 191 downloads/weekTypeScriptLicense: MIT

            mcpmeasured growthOpen source ↗

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

            12GitHub stars+2 (+20.0 %)
          • 8

            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
            • 9

              MCP
              Active

              Local semantic search over your Obsidian vault - always fresh, never reindex.

              ↓ 126 downloads/weekJavaScriptLicense: MIT

                mcpmeasured growthOpen source ↗

                Install claude mcp add freshvault -- npx freshvault

                0GitHub starsstable
              • 10

                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
                • 11

                  MCP
                  Active

                  Read-only semantic search MCP server for Obsidian vaults using local Ollama embeddings.

                  ↓ 111 downloads/weekJavaScriptLicense: MIT

                    mcpmeasured growthOpen source ↗

                    Install claude mcp add obsidian-semantic-mcp -- npx @dalecb/obsidian-semantic-mcp

                    0GitHub starsstable
                  • 12

                    MCP
                    Active

                    Graph-powered code intelligence with semantic search and knowledge graph for AI assistants

                    ↓ 107 downloads/weekTypeScriptLicense: NOASSERTION

                      mcpmeasured growthOpen source ↗

                      Install claude mcp add codeseeker -- npx codeseeker

                      19GitHub stars+1 (+5.6 %)
                    • 13

                      MCP
                      Active

                      Persistent memory for AI coding agents. Local-first SQLite + vector search. 17 MCP tools.

                      ↓ 92 downloads/weekGoLicense: NOASSERTION

                        mcpmeasured growthOpen source ↗

                        Install claude mcp add same -- npx @sgx-labs/same

                        23GitHub starsstable
                      • 14

                        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 %)
                        • 15

                          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 stars+7 (+7.1 %)
                          • 16

                            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 stars+7 (+7.1 %)
                            • 17

                              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 stars+7 (+7.1 %)
                              • 18

                                MCP
                                Active

                                {GIN} verdict, M-Value AVM, market facts + semantic search for Moroccan real estate. Moat-safe.

                                ↓ 62 downloads/weekJavaScriptLicense: MIT

                                  mcpmeasured growthOpen source ↗

                                  Install claude mcp add marocain-mcp-server -- npx @marocain/mcp-server

                                  1GitHub starsstable
                                • 19

                                  MCP
                                  Active

                                  Obsidian MCP server: semantic search, knowledge graph, and vault editing. No plugin required.

                                  ↓ 61 downloads/weekTypeScriptLicense: Apache-2.0

                                    mcpmeasured growthOpen source ↗

                                    Install claude mcp add obsidian-brain -- npx obsidian-brain

                                    10GitHub stars+1 (+11.1 %)
                                  • 20

                                    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
                                    • 21

                                      MCP
                                      Active

                                      Code intelligence MCP server — impact analysis, semantic search, dependency graphs

                                      ↓ 57 downloads/weekPythonLicense: Apache-2.0

                                        mcpmeasured growthOpen source ↗

                                        Install claude mcp add flyto-indexer -- uvx flyto-indexer

                                        4GitHub starsstable
                                      • 22

                                        MCP
                                        Active

                                        High-performance knowledge graph MCP server for AI coding agents with semantic search.

                                        ↓ 50 downloads/weekRustLicense: MIT

                                          mcpmeasured growthOpen source ↗

                                          Install claude mcp add lain -- npx @spuentesp/lain-mcp

                                          6GitHub starsstable
                                        • 23

                                          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
                                          • 24

                                            MCP
                                            Active

                                            Knowledge base for Claude Code with semantic search, feed intelligence, and teams

                                            ↓ 29 downloads/weekPythonLicense: NOASSERTION

                                              mcpmeasured growthOpen source ↗

                                              Install claude mcp add distillery-mcp -- uvx distillery-mcp

                                              24GitHub starsstable
                                            • 25

                                              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