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A little curiosity. A world of open source.
THE FIRST COLLECTIONLemory is a local middleware that transforms markdown notes (e.g., Obsidian vaults) into a context database for AI agents. It supports keyless on-device hybrid search, Korean-specific processing, hierarchical token savings, and knowledge graph visualization, integrating with various AI tools via MCP.
Docmost is an open-source collaborative wiki and documentation platform designed as an alternative to Confluence and Notion.
LobeHub is an open-source AI agent platform that organizes agents into a 7×24 operation, enabling users to hire, schedule, and collaborate with AI teammates while self-hosting via Docker or Vercel.
AI Engineering is an open-source e-book providing a systematic guide to building production-grade AI systems, from LLM fundamentals to advanced agent architectures. Maintained by the community and Hermes Agent, it features daily updates, traceable sources, and advanced search capabilities.
SiYuan is a privacy-first, self-hosted personal knowledge management system with block-level references, Markdown WYSIWYG editing, SQL queries, spaced repetition, and AI writing via OpenAI API. It offers desktop, mobile, Docker deployment, and a built-in CLI.
by2kb converts video URLs from platforms like Bilibili and YouTube into durable Markdown knowledge base artifacts, including transcripts, abstracts, and study notes, supporting agent-first workflows and local/cloud ASR.
Langchain-Chatchat is an open-source offline RAG and Agent application based on Langchain and ChatGLM, Qwen, Llama etc., supporting local knowledge base Q&A, multiple model inference frameworks, WebUI and API.
An open-source Claude Code plugin that transforms any codebase into an interactive, searchable knowledge graph. Uses Tree-sitter and multi-agent LLM pipelines to visualize files, functions, classes, and dependencies—plus domain analysis, guided tours, and diff impact assessment. Works across 18+ AI coding platforms including Cursor, Codex, Gemini CLI, and Copilot.
Tisty is a local-first, open-source productivity tool for Windows and macOS that combines notes, documents, and task management. It stores all data as plain Markdown files on the user's disk, ensuring privacy with no accounts, subscriptions, or telemetry. Features include an Eisenhower matrix for prioritization, natural language date parsing, and MCP integration for AI assistants.
Context is an MCP gateway that gives every AI client — ChatGPT, Claude, Codex, Notion AI — one endpoint to a personal knowledge base kept as plain Markdown in a Dropbox folder or S3-compatible bucket you own, with privacy tiers, workspaces and a session-end capture hook.
Ghostget is an open-source CLI and SDK that provides AI agents with precise, bounded web capabilities. It enables secure page capture, media archiving, and encrypted reads from connected services like social platforms and email, ensuring local custody and explicit trust boundaries without granting unrestricted browser or API access.
Consigliere is an AI-powered CLI for organizing knowledge, projects, and ideas. It creates a structured workspace that integrates with AI assistants like Claude Code to maintain context, track progress, and manage an idea-to-project lifecycle.
Obsidian plugin that embeds the DeepSeek Harness native Web UI, giving each vault its own isolated DSH instance for AI-assisted note work, with selection/file linking, model config sync, and optional portable runtime.
Logseq is a privacy-first, open-source knowledge management and collaboration platform designed for organizing notes and managing tasks.
AFFiNE is an open-source, privacy-focused workspace that merges documents, whiteboards, and databases into a single local-first platform for knowledge management and planning.
Trilium Notes is a free, open-source, cross-platform hierarchical note-taking application designed for building large personal knowledge bases.
