Open-source Nuclino alternatives

Outline is a knowledge base for teams, built with React and Node.js. It focuses on fast, collaborative writing: documents are edited together in realtime, stay compatible with Markdown, and are organized into collections so a growing team can find what it has written down.

The maintainers offer a hosted version at getoutline.com, and the repository contains the source that runs Outline and its associated services. If you only want to use Outline you do not need to run the code yourself, while teams that want their own copy can follow the documentation for a production configuration and use the published container images. Topics also mention a Slack integration.

The repository license is listed as 'Other', so review it before commercial redistribution. Outline suits teams looking for a wiki or internal documentation tool with a clean editor, as an alternative to products such as Confluence or Notion for company knowledge. The project does not accept AI-generated pull requests.

Wiki.js is a next-generation open-source wiki platform built on Node.js with a Vue front end. This repository contains the upcoming 3.0 release in beta, and the README is explicit that it is not for production use. The current stable 2.x release is published at js.wiki and in a separate repository.

The project is aimed at documentation and knowledge sharing for teams. Topics list Markdown editing, Git, cross-platform operation and documentation, and the beta is accompanied by installation requirements, a changelog and a feature request channel. Contributors can help with translations, and the project is supported by sponsors, patrons and donations from the community.

Wiki.js is AGPL-3.0 licensed. It is software you run on your own server, so it suits teams that want a self-hosted wiki they control. Anyone who needs a dependable wiki today should look at the 2.x stable version rather than this beta, and treat the 3.0 code as a preview of what is coming.

An Otter Wiki is a collaborative wiki written in Python with the Flask microframework. Content is written in Markdown and stored in a Git repository, so every change is tracked and the full page history is available, and the interface is deliberately minimalistic with a dark mode option.

The editor highlights Markdown, supports tables and extended syntax such as footnotes, alerts and Mermaid diagrams, and pages can carry attachments. A customizable sidebar can show a menu or page index, user authentication controls who can edit, and an experimental Git HTTP server lets you clone, pull and push the wiki content directly. The first registered account becomes the admin.

Otter Wiki is licensed under MIT and is meant to be self-hosted, with docker-compose recommended and example configurations for nginx, Apache and Caddy in the installation guide. A demo is available online. It suits small teams, personal knowledge bases and project documentation where simple setup and plain-text, Git-backed storage matter more than a heavy feature set.

LeafWiki is a self-hosted wiki aimed at engineers and self-hosters who want structured, long-lived documentation without heavy infrastructure. It ships as a single Go binary with SQLite, stores page content as Markdown on disk, and needs no Node.js, Redis or Postgres. The README positions it for people who found tools like Wiki.js or Outline too much to operate.

Pages are organized in an explicit tree rather than a flat feed, and backup is as simple as copying the data directory once the app is stopped. It runs on Linux, macOS, Windows and Raspberry Pi, works behind reverse proxies with a base path and trusted-header authentication, and offers three access modes: fully internal, public read with login-only editing, or open editing. Roles include admin, editor and viewer, and Git backup and SMTP email are configurable.

LeafWiki is written in Go with a React front end and licensed under MIT. It can be installed with Docker, Docker Compose, Kubernetes, a Linux installer or a plain binary. A demo site resets hourly. It suits small teams and homelab users who want runbooks and documentation with minimal upkeep.

Crowi is a Markdown wiki for sharing knowledge in a team. Page URLs are the hierarchy, so a path such as /team/handbook/onboarding reads exactly as it is written, which keeps navigation intuitive and simple.

The README explains that version 1 is deprecated and unmaintained, and that version 2, codenamed Reignite, is in active prerelease. It rebuilds the stack on a Hono API with Next.js 16 and React 19 while keeping the version 1 MongoDB data shape, so existing wikis can be upgraded in place. Version 2 adds real-time collaborative editing with Yjs, an embedded MCP server for AI agents, OAuth 2.0 and personal access tokens, a pluggable architecture for storage, search, rendering and mail, encryption of sensitive configuration, dark mode and a command-line tool.

There is no stable version 2 yet, so the API and configuration can change between alpha releases, and the maintainers advise pinning a published release rather than using the repository head. Crowi is written in TypeScript, licensed under MIT and self-hosted. It suits teams already comfortable running MongoDB who want a modern Markdown wiki.

Matterwiki is a deliberately simple wiki for teams. It was created for small companies that find full wiki software too complicated and that see knowledge getting lost in chat channels. Articles are filed under topics so content stays organized across departments, and the change history shows who edited which document and when.

The README suggests using it for documentation, notes, culture guidelines and employee onboarding content. It is a Node.js and React application. Setup requires Node version 7 or later and npm: you clone the repository, install dependencies, and edit the configuration file to set a secret phrase used to encode and decode access tokens.

The project is MIT licensed. The README carries a warning that some features may be broken while a stable 0.3.0 release is being prepared, with the master branch expected to work but a preview of the next version on separate branches. It suits people comfortable running their own Node application, and the project invites contributors to pick up issues.

Wukong KnowledgeBase (悟空知识库) is a knowledge management system for creating wiki content and sharing it with colleagues for collaborative writing. Pages can start from a blank document or from a built-in template. It comes from the team behind Wukong CRM, and a trial site is available.

Built-in templates cover project work such as product requirements, meeting notes, decision records, how-to guides, retrospectives, work plans and task reports. Core modules provide document creation, online editing, article comments, sharing through external links and global content search.

The back end uses Spring Cloud Alibaba, Spring Boot and MyBatis-Plus with a Vue and Element UI front end whose built files are bundled. Deployment is on Linux and needs JDK 1.8, Maven, MySQL 8, Redis and Elasticsearch 8.5.3; credentials from the vendor's Wukong ID platform are also configured. The license is listed as Other, and API documentation and a Docker image are mentioned.