NNotion

Trilium Notes is a free, open-source, cross-platform hierarchical note-taking application designed for large personal knowledge bases. Users organize rich WYSIWYG notes in arbitrarily deep trees, place notes in multiple locations, edit tables, images, mathematics, and source code, search full text, version notes, and publish notes publicly.

The application also documents note attributes, scripting, REST automation, encryption, synchronization through a self-hosted sync server, relation and link maps, mind maps, geographic maps, Excalidraw-based canvases, web clipping, and Markdown or Evernote import and export. It provides desktop binaries for Windows, macOS, and Linux, a browser-accessible server interface, mobile web access, and Docker-based server installation.

Docmost is open-source collaborative wiki and documentation software for teams. Its documented workflows include real-time collaboration, spaces, permissions management, groups, comments, page history, search, file attachments, and embedded external content.

The product also supports diagrams through Draw.io, Excalidraw, and Mermaid, plus translations in more than ten languages. Users can try its cloud version or deploy the complete open-source core using the project's self-hosting documentation. The core is licensed under AGPL-3.0, while some enterprise features use a separate enterprise license.

La Suite Docs is an open-source, web-native collaborative editor for teams and organizations. It supports rich-text and Markdown editing, structured documents and subpages, hierarchical knowledge organization, searchable content, comments, sharing, live cursors, presence, and granular access control. Offline editing and document import/export are also documented.

Optional model- and gateway-agnostic AI features can rewrite, summarize, translate, and correct selected text, with a beta AI toolbar and cursor workflow. Docs includes presentation mode, PDF exports, resource-server and server-to-server APIs, and an example for importing Meet transcripts. The complete product can be self-hosted using Kubernetes or Docker Compose, with local development documented through Docker and Docker Compose.

NoteDiscovery is a lightweight, self-hosted note-taking and knowledge-base application for personal wikis, second brains, privacy-conscious users, and small teams. Users write and organize notes stored as plain Markdown files, then find them through full-text search, tags, favorites, backlinks, an outline panel, and an interactive graph view.

The documented interface includes responsive layouts, themes, templates with dynamic placeholders, drawing support, LaTeX/MathJax, Mermaid diagrams, HTML export, printing, and optional password protection. Its built-in MCP server lets compatible AI assistants search, create, edit, organize, tag, and append to notes. It runs through Docker or Docker Compose, or directly with Python, and stores data on the user's server.

Documize Community is an open-source knowledge-management solution for technical and non-technical users. It unifies customer-facing and internal documentation, organizing content with labels, spaces, and categories. The repository describes the product as a modern Confluence alternative and includes a screenshot of the product interface.

The application is built with Go and EmberJS and compiles to a single executable for Linux, Windows, macOS, and Raspberry Pi. Deployments require a database with full-text search support, including PostgreSQL, Microsoft SQL Server, MySQL, Percona, or MariaDB. Authentication options include email/password, LDAP, Active Directory, Keycloak, and CAS. Community+ additionally documents approval workflows, version and lifecycle management, feedback, PDF export, analytics, activity streams, audit logs, and assignments.

Alexandrie is an open-source, self-hosted wiki and knowledge-management platform for teams and individuals. Users create and maintain nested documents with an extended Markdown editor supporting LaTeX, custom containers, checkboxes, snippets, speech-to-text, and embedded diagrams. Documents can be organized across teams, workspaces, categories, and hierarchical nodes.

The platform provides full-text search with highlighted results, offline-first PWA access and synchronization, public links, granular workspace and node permissions, integrated Kanban boards, media previews, and ZIP import/export. It supports OIDC single sign-on, automated backup and restore workflows, and S3-compatible storage. Deployment is documented through Docker Compose, with the application available locally at port 8200.

Crowi is a Markdown wiki designed for team knowledge sharing. Its URL-based page hierarchy organizes content into paths such as `/team/handbook/onboarding`, while the web frontend supports wiki access and real-time collaborative editing through Yjs and Hocuspocus.

The product includes pluggable storage and search backends, including local filesystem storage, S3, MongoDB-native search, Elasticsearch, and OpenSearch. It also documents OAuth 2.0, personal access tokens, an embedded MCP server, KaTeX and PlantUML renderers, and an end-user CLI for reading, writing, and searching through the HTTP API.

Crowi is deployable under user control. The repository documents local development with Node.js, pnpm, MongoDB, and Redis, and provides published Docker images plus Docker Compose, deployment, and self-hosting guidance. The current v2 release line is an active prerelease.

LeafWiki is a self-hosted wiki for engineers, small teams, and homelabs that need structured, long-lived documentation. It stores Markdown on disk with SQLite metadata and provides hierarchical navigation, manual ordering, tags, full-text search, backlinks, link-status tracking, and a Markdown editor with live preview.

The product supports internal, public-read, or unauthenticated access modes, with admin, editor, and viewer roles. Optional capabilities include revision history, link rewriting on page moves, ZIP-based Markdown import, Git backups, API keys, custom styling, dark mode, and mobile-friendly pages. It runs as a single Go binary or through Docker, Docker Compose, a Linux installer, or a direct binary on Linux, macOS, Windows, and Raspberry Pi.

Beever Atlas ingests conversations from Slack, Discord, Microsoft Teams, and Mattermost, extracting atomic facts, entities, relationships, and citations. It deduplicates and organizes that information into continuously updated channel wikis containing topics, people, decisions, open questions, timelines, FAQs, glossaries, and resources. Users can browse the wiki or ask natural-language questions that return cited answers from the source messages.

The product provides a React dashboard and can expose the knowledge base through an MCP server for Claude Code and Cursor. It includes scheduled or on-demand synchronization, semantic and graph-based retrieval, and configurable AI providers. The repository documents a self-hosted Docker Compose deployment with backend, bot, web, and supporting data stores, alongside local development options.

AppFlowy is a browser-based collaborative workspace that brings team projects, wikis, documentation, and AI-assisted content management together. Its documented use cases include maintaining a team knowledge base, publishing documentation, managing content, and coordinating tasks and projects.

The product supports rich-content documents, Grid and Kanban database views, quick notes, workspace invitations, and public or private spaces for organizing content. The repository documents both a hosted cloud option and self-hosted deployment on a user-controlled server, with Docker listed among its technologies and deployment materials.

WebObsidian provides a browser-based and desktop application for editing a folder of Markdown files as an Obsidian-compatible knowledge base. Users can write and render notes, follow wikilinks, inspect backlinks and outlines, browse an interactive graph, search full text with fielded queries, and publish read-only note pages.

The application supports GitHub synchronization with Git LFS, per-file version history, community plugins, responsive mobile layouts, and a scoped REST API for AI agents to read, write, and search notes. It is single-user and self-hosted, with Docker Compose deployment, a Node production server, or packaged macOS, Windows, and Linux desktop installers.

Atomic is a personal knowledge base built around “atoms,” or Markdown notes that are automatically chunked, embedded, tagged, and linked by semantic similarity. Users can capture content through the desktop app, iOS app, browser extension, RSS feeds, or MCP tools, then search and browse the resulting knowledge graph.

The product includes wiki synthesis with inline citations, scheduled research reports, agentic chat, hierarchical auto-tagging, a spatial canvas, and support for OpenRouter, Ollama, and OpenAI-compatible providers. It runs as a Tauri desktop app, a web frontend with a headless server, or both, and can be deployed locally with Docker Compose, Fly.io, or a standalone server.

sage-wiki ingests documents, notes, code, email, and other supported formats, then uses an LLM compilation pipeline to produce interconnected Markdown articles, summaries, concepts, and a knowledge graph. Users can search the resulting corpus with hybrid lexical, vector, and graph retrieval, ask cited questions, inspect provenance, and capture new knowledge.

The product supports humans and AI agents through a web UI, terminal dashboard, MCP tools, REST API, and Obsidian-compatible Markdown. Its graph features include typed relations, evidence, confidence, entity resolution, contradiction handling, and multi-hop graph queries. It runs as a Go binary, with local-model support, SQLite or PostgreSQL/pgvector storage, Docker Compose deployment, shared servers, Git synchronization, and federated hubs.

LLM Wiki is an open-source knowledge-management workspace for turning reading and research into a persistent wiki. Users upload documents, capture web pages and PDFs with a Chrome extension, highlight passages, add comments, and browse generated pages with source links, cross-linking, graphs, charts, and Mermaid diagrams.

Claude connects through MCP to search, read, create, edit, append, delete, and lint wiki content. Scheduled Claude routines can synthesize newly added sources and update affected pages. The project supports a hosted mode and local self-hosting, where a CLI starts the API and Next.js web app, stores source files and generated Markdown locally, and uses SQLite for indexing; hosted mode uses Postgres and S3.

EdgeEver is an open-source, Evernote-style notes workspace built around a three-pane interface for capturing and organizing rich notes. It supports text, Markdown, images, PDFs, Office files, archives, audio, and video attachments, nested notebooks, revision history, public sharing, Mermaid diagrams, imports, and ZIP exports containing portable Markdown and attachments.

The product provides web clipping for Chrome, Edge, and Firefox, unlimited synchronization across web, PWA, Android, and macOS, and offline drafts or native-client editing with queued synchronization. AI features support summarization, rewriting, translation, task extraction, and other note operations through configurable model providers; MCP and REST APIs support agent access and organization.

EdgeEver is licensed under AGPL-3.0 and deploys as a Cloudflare Workers application using D1 and R2, with documented multi-user

NoteGen is a local-first Markdown application for capturing thoughts, voice recordings, screenshots, images, links, files, and todos before organizing them into structured notes. Users can filter records by tag, time, or type, select related material, apply a template or instruction, and produce summaries, reports, articles, or other Markdown structures for continued editing.

The editor supports visual and source Markdown modes, tables, task lists, code, math, diagrams, search and replace, attachments, export, printing, history, and workspace management. It also provides AI chat and writing assistance, OCR, audio and image capabilities, searchable knowledge bases with semantic and local retrieval, MCP servers, agent tools, and an editable canvas for diagrams, mind maps, timelines, drawings, and charts.

Notes remain ordinary Markdown files in a chosen workspace. The application is local

Kuku is an open-source local-first Markdown workspace for macOS. It edits ordinary .md files in a local vault and supports portable personal knowledge workflows, including wiki links, backlinks, search, and 2D or 3D graph navigation.

The application also provides Second Brain workflows, AI Agent, Ask, and Inline modes, file or text attachments, and reviewable proposed edits with diffs. Its encrypted sync foundation covers workspaces, devices, key envelopes, signed commits, and encrypted objects.

The repository includes the macOS client, web app, Go server, protobuf contracts, Rust AI and indexing crates, and Docker infrastructure. Users can download the macOS build, install it through Homebrew, or inspect and self-host the system; Windows and Linux are listed as forthcoming.

Valour is an open-source community platform organized around “planets,” which provide real-time chat channels, Reddit-style persistent thread feeds, publishable wikis, voice channels, roles, per-channel permissions, and community economies. Its web client is also available as Windows and Android apps, with features including multi-chat windows, themes, bots, webhooks, automoderation, and a Discord importer.

The platform documents self-hosted deployment with Docker Compose using PostgreSQL, Redis, local or S3-compatible media storage, and Caddy for HTTPS. Operators can run community nodes and optionally use federation to move planets between official infrastructure and independently operated servers. Voice can use managed infrastructure or a self-hosted LiveKit server.