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Investigation

Awesome AI OSS for AIT builders

A short curated map of open-source building blocks for human + agent pairs. Pick tools here. Belong somewhere next.

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  • Protocols & SDKs
    mcpdotdirect/template-mcp-server
    Template for building custom MCP servers

    Added: March 10, 2025

    ★ 76 on GitHub

    Open repo
  • Protocols & SDKs
    modelcontextprotocol/csharp-sdk
    Official C# SDK for Model Context Protocol

    Added: March 10, 2025

    ★ 4.6k on GitHub

    Open repo
  • MCP servers & runtimes
    ppl-ai/modelcontextprotocol
    Perplexity MCP server for web search answers

    Added: March 10, 2025

    ★ 2.6k on GitHub

    Open repo
  • MCP servers & runtimes
    solana-foundation/solana-dev-mcp
    Solana developer MCP server

    Added: March 9, 2025

    Open repo
  • MCP servers & runtimes
    ahujasid/blender-mcp
    Blender MCP server for 3D scene control

    Added: March 7, 2025

    ★ 33k on GitHub

    Open repo
  • Agent frameworks
    OpenManus
    Open-source general AI agent inspired by Manus

    Added: March 6, 2025

    ★ 58.9k on GitHub

    Open repo
  • MCP servers & runtimes
    GitHub MCP Server
    Official GitHub MCP server for repo and issue tools

    Added: March 4, 2025

    ★ 34.2k on GitHub

    Open repo
  • MCP servers & runtimes
    jsonresume/mcp
    JSON Resume MCP server

    Added: March 4, 2025

    ★ 63 on GitHub

    Open repo
  • Protocols & SDKs
    modelcontextprotocol/ruby-sdk
    Official Ruby SDK for Model Context Protocol

    Added: February 27, 2025

    ★ 940 on GitHub

    Open repo
  • Protocols & SDKs
    modelcontextprotocol/rust-sdk
    Official Rust SDK for Model Context Protocol

    Added: February 18, 2025

    ★ 4.1k on GitHub

    Open repo
  • MCP servers & runtimes
    chroma-core/chroma-mcp
    Chroma MCP server for embeddings and collections

    Added: February 11, 2025

    ★ 601 on GitHub

    Open repo
  • Protocols & SDKs
    langchain-ai/langchain-mcp-adapters
    Adapters to use MCP tools inside LangChain agents

    Added: February 7, 2025

    ★ 3.6k on GitHub

    Open repo
  • Protocols & SDKs
    modelcontextprotocol/swift-sdk
    Official Swift SDK for Model Context Protocol

    Added: February 5, 2025

    ★ 1.6k on GitHub

    Open repo
  • Agent frameworks
    Open Deep Research
    AI agent that conducts iterative web research

    Added: February 4, 2025

    ★ 19.9k on GitHub

    Open repo
  • Protocols & SDKs
    cloudflare/agents
    Cloudflare Agents SDK with MCP support

    Added: January 29, 2025

    ★ 5.9k on GitHub

    Open repo
  • Protocols & SDKs
    modelcontextprotocol/java-sdk
    Official Java SDK for Model Context Protocol

    Added: January 20, 2025

    ★ 3.8k on GitHub

    Open repo
  • MCP servers & runtimes
    apify/actors-mcp-server
    Apify Actors MCP server for web scraping actors

    Added: January 2, 2025

    ★ 14.3k on GitHub

    Open repo
  • MCP servers & runtimes
    punkpeye/fastmcp
    TypeScript framework for building MCP servers fast

    Added: December 27, 2024

    ★ 3.3k on GitHub

    Open repo
  • MCP servers & runtimes
    doobidoo/mcp-memory-service
    Semantic memory MCP service with embeddings

    Added: December 26, 2024

    ★ 2.1k on GitHub

    Open repo
  • MCP servers & runtimes
    sparfenyuk/mcp-proxy
    Proxy that bridges MCP stdio and SSE transports

    Added: December 26, 2024

    ★ 2.8k on GitHub

    Open repo
  • MCP servers & runtimes
    grafana/mcp-grafana
    Official Grafana MCP server

    Added: December 24, 2024

    ★ 3.6k on GitHub

    Open repo
  • MCP servers & runtimes
    smithery-ai/cli
    Smithery CLI to discover and run MCP servers

    Added: December 22, 2024

    ★ 849 on GitHub

    Open repo
  • MCP servers & runtimes
    cyanheads/atlas-mcp-server
    ATLAS knowledge-graph MCP memory server

    Added: December 16, 2024

    ★ 478 on GitHub

    Open repo
  • Protocols & SDKs
    modelcontextprotocol/kotlin-sdk
    Official Kotlin SDK for Model Context Protocol

    Added: December 16, 2024

    ★ 1.5k on GitHub

    Open repo
  • MCP servers & runtimes
    isaacphi/mcp-gdrive
    Google Drive MCP server for docs and files

    Added: December 13, 2024

    ★ 282 on GitHub

    Open repo
  • MCP servers & runtimes
    lastmile-ai/mcp-agent
    MCP-native agent patterns

    Added: December 10, 2024

    ★ 8.6k on GitHub

    Open repo
  • MCP servers & runtimes
    JetBrains/mcpProxy
    JetBrains IDE MCP proxy for coding agents

    Added: December 9, 2024

    ★ 962 on GitHub

    Open repo
  • MCP servers & runtimes
    firecrawl/firecrawl-mcp-server
    Firecrawl MCP server for crawl-to-markdown

    Added: December 6, 2024

    ★ 7.7k on GitHub

    Open repo
  • MCP servers & runtimes
    browserbase/mcp-server-browserbase
    Browserbase MCP server for cloud browsers

    Added: December 5, 2024

    ★ 3.4k on GitHub

    Open repo
  • Agent frameworks
    Smolagents
    Barebones Hugging Face library for code-writing and tool-calling agents

    Added: December 5, 2024

    ★ 30.2k on GitHub

    Open repo
  • MCP servers & runtimes
    wong2/mcp-cli
    CLI client for interacting with MCP servers

    Added: December 5, 2024

    ★ 447 on GitHub

    Open repo
  • MCP servers & runtimes
    executeautomation/mcp-playwright
    Playwright MCP server for browser automation

    Added: December 3, 2024

    ★ 5.7k on GitHub

    Open repo
  • MCP servers & runtimes
    sooperset/mcp-atlassian
    MCP server for Jira and Confluence

    Added: December 3, 2024

    ★ 6.1k on GitHub

    Open repo
  • MCP servers & runtimes
    qdrant/mcp-server-qdrant
    Official Qdrant MCP server for vector search

    Added: December 2, 2024

    ★ 1.6k on GitHub

    Open repo
  • MCP servers & runtimes
    MarkusPfundstein/mcp-obsidian
    MCP server for Obsidian notes

    Added: November 29, 2024

    ★ 4.5k on GitHub

    Open repo
  • MCP servers & runtimes
    neondatabase/mcp-server-neon
    Official Neon Postgres MCP server

    Added: November 29, 2024

    ★ 659 on GitHub

    Open repo