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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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

    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-1 221 794 (-18.7 %)
  2. 2

    Library
    UnknownLast commit: unavailable

    Typescript bindings for langchain

    • llm
    • ai
    • gpt3
    • chain
    • prompt

    npmmeasured growthOpen source ↗

    Install npm install langchain

    2 124 007downloads over 7 days-236 302 (-10.0 %)
  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

    776 369downloads over 7 days-342 529 (-30.6 %)
  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 starsstable
    • 5

      MCP
      Active

      MCP server for Zotero: search, citations, safe writes, semantic search, and PDF passages.

      ↓ 1 201 downloads/weekTypeScriptLicense: MIT

        mcpmeasured growthOpen source ↗

        Install claude mcp add zoteus -- npx @oscardvs/zoteus

        29GitHub starsstable
      • 6

        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 starsstable
        • 7

          MCP
          Active

          Cloud-persistent, semantic-search memory MCP — drop-in for server-memory, backed by ZeroDB.

          ↓ 508 downloads/weekJavaScriptLicense: MIT

            mcpmeasured growthOpen source ↗

            Install claude mcp add ainative-memory-mcp -- npx ainative-memory-mcp

            0GitHub starsstable
          • 8

            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
            • 9

              MCP
              UnknownLast commit: unavailable

              Deep code indexing for AI agents. FTS5 + embeddings + call graphs + git intelligence. Fully local.

              mcpmeasured growthOpen source ↗

              Install claude mcp add srclight -- uvx srclight

              350downloads over 7 daysstable
            • 10

              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
              • 11

                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
                • 12

                  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
                  • 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

                      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
                      • 15

                        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
                        • 16

                          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 starsstable
                          • 17

                            MCP
                            UnknownLast commit: unavailable

                            MantisBT MCP server – manage issues, notes, files, tags, and relationships. With semantic search.

                            mcpmeasured growthOpen source ↗

                            Install claude mcp add mantisbt-mcp-server -- npx @dpesch/mantisbt-mcp-server

                            106downloads over 7 daysstable
                          • 18

                            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
                            • 19

                              MCP
                              UnknownLast commit: unavailable

                              Semantic search over 50,000+ Dynamics 365 F&O artifacts: tables, forms, classes, and more.

                              mcpmeasured growthOpen source ↗

                              Install claude mcp add fo-semantic-mcp -- npx fo-semantic-mcp

                              86downloads over 7 daysstable
                            • 20

                              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 starsstable
                              • 21

                                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
                                • 22

                                  MCP
                                  UnknownLast commit: unavailable

                                  AI-native digital asset management: semantic search, generative image edits, and CDN delivery.

                                  mcpmeasured growthOpen source ↗

                                  Install claude mcp add picsha -- npx @picsha-ai/mcp-server

                                  76downloads over 7 daysstable
                                • 23

                                  MCP
                                  UnknownLast commit: unavailable

                                  Advanced codebase indexing and semantic search MCP server

                                  mcpmeasured growthOpen source ↗

                                  Install claude mcp add deepcontext -- npx @wildcard-ai/deepcontext

                                  74downloads over 7 daysstable
                                • 24

                                  MCP
                                  Active

                                  Persistent memory for AI agents — history, context, semantic search, queues. 17 tools, stdio/SSE.

                                  ↓ 74 downloads/weekLicense: NOASSERTION

                                    mcpmeasured growthOpen source ↗

                                    Install claude mcp add agenticmemory -- npx agmry

                                    1GitHub starsstable
                                  • 25

                                    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