Open Source TypeScript Knowledge Management Software

One hyper-fused platform for wildly creative minds. A privacy-focused, local-first, open-source, and ready-to-use alternative for Notion & Miro. There can be more than Notion and Miro. AFFiNE is a next-gen knowledge base that brings planning, sorting, and creating all together. Privacy first, open-source, customizable, and ready to use. A modern block editor can help you not only for docs, but slides and tables as well. When you write in AFFiNE you can use Markdown syntax which helps create an easier editing experience, that can be experienced with just a keyboard. And this allows you to export your data cleanly into Markdown.

SiYuan is a local-first personal knowledge management system that supports complete offline use, as well as end-to-end encrypted synchronization. Fuse blocks, outlines, and bidirectional links to build your eternal digital garden. SiYuan, the only important core concept is Content block. The content block can be formed through the formatting format, so that we can organize our thoughts and knowledge at the block-level granularity, and it is also convenient for reading and outputting long content. Built-in 20+ types of block-level elements and 10+ span-level elements. Rich elements meet common typesetting needs, and more specialized needs can be extended through widget blocks. Going into block focus, let's focus more on the content of the current block. All blocks support zoom-in focus, easily switch in context with breadcrumb navigation. Editing of large documents is also possible. Through dynamic loading technology, large documents with millions of words can be edited smoothly.

Customizable personal knowledge base with git as backup manager and blogging platform.

DocsGPT is an open-source (MIT) platform for private AI agents, assistants and enterprise search over your own documents, built by Arc53. It ingests PDFs, Office files, scanned pages (OCR), web pages and repositories, syncs Google Drive, SharePoint, Confluence, GitHub and S3, and answers with citations to the source passage. Agents call tools, APIs and MCP servers with per-action approval; a visual builder chains AI steps, conditions and code into workflows; agents can produce DOCX, XLSX, PPTX and PDF files. Models: OpenAI, Anthropic, Google and others, or local via Ollama, llama.cpp or vLLM. Vectors: pgvector, Qdrant, Milvus, Elasticsearch, MongoDB Atlas or FAISS. Install with one line (curl -fsSL https://docs.ac/install | bash), or deploy with Docker Compose or Kubernetes, including fully air-gapped. Ships an OpenAI-compatible API, an MCP server, a chat widget, OIDC SSO, SCIM, guardrails and an audit log.

Polar is an integrated reading environment to build your knowledge base. Actively read, annotate, connect thoughts, create flashcards, and track progress. Save time in creating flashcards in one click from text highlights. We use OpenAI's GPT-3 to automate this tedious process. Review them with our spaced repetition algorithm or sync them to Anki. Manage and save for later all your PDFs, EPUBs, and web pages in one place. Use tags, reading progress, and detailed document information to stay on top of your reading. Use the integrated reader to actively read, highlight, take notes, connect thoughts, and track progress with pagemarks. Build your detailed knowledge base with granular highlight tagging, and flashcards, directly from text highlights. Use the Polar Chrome extension to save web pages in your repository. Review your annotations and flashcards directly in Polar using our spaced repetition algorithms.

Apache Answer is an open-source software project under incubation at the Apache Software Foundation (ASF). It empowers you to build a robust question-and-answer (Q&A) platform to thrive your community at ease. Apache Answer is capable for but not limited to: Community Forum: Open discussions and knowledge sharing within your online community. Help Center: Provide a central location for users to find answers to frequently asked questions (FAQs) and troubleshoot issues related to your product or service. Knowledge Base: Create a searchable repository of valuable information and best practices for your team or organization. Discover more by yourself.

dMind is a minimalistic, distraction-free yet feature-rich note-taking app. Use a modified and extended version of markdown to take your notes. Are you a visual learner? dMind has built-in support for diagrams, tables and math expressions.

Ideon is a self-hosted visual workspace where everything related to a project lives on a single canvas. Most projects fail not because of poor execution, but because context disappears—code lives in repositories, designs in specialized tools, and decisions in fragmented chat threads. Ideon reduces the cognitive cost of switching between these by making their relationships explicit on a spatial map. Core Features: - Live Blocks : Embed GitHub repositories, notes, links, and files side-by-side. - Spatial Organization : Move beyond abstract hierarchies; use space to define relationships. - Snapshots : Access past versions of the workspace to see how decisions and context evolved. - Multiplayer : Collaborate in real-time to maintain a shared mental model for the whole team. - Magic Paste : Instantly convert URLs, text, or images into structured blocks automatically. - Self-Hosted : Maintain full data ownership with a simple, secure Docker deployment.