10 Best Open Source Nuclino Alternatives
A curated collection of the 10 best open source and self-hosted alternatives to Nuclino in 2026.
Looking for a free, privacy-friendly, or self-hosted replacement for Nuclino in 2026? The top open-source alternative is AppFlowy — Self-hosted AI workspace for teams.
Other highly rated open-source Nuclino alternatives include Affine, SiYuan and Outline.
Self-hosted AI workspace for teams
AppFlowy is the AI collaborative workspace where you achieve more without losing control of your data. It brings projects, wikis, and teams together with AI-powered search, meeting notes, and document collaboration. - AI Search: Get answers grounded in your sources in seconds - Knowledge Base: Centralized source of truth for teams and AI agents - Project Management: End-to-end project tracking with less overhead - AI Meeting Notes: Turn meetings into actions and insights - Real-time Collaboration: Co-edit documents or comment asynchronously - Self-hosting: Deploy on-premises, in your cloud, or air-gapped environments - Local AI: Run AI processing and models within your infrastructure - Data Sovereignty: Full control over data storage, residency, and compliance - Cross-platform: Available on macOS, Windows, Linux, iOS, Android, and web - Migration Support: Seamless migration from Notion, Confluence, and more - Admin Panel: Centralized management for users, workspaces, and permissions - SSO & Integrations: SAML, OIDC, SCIM, LDAP, MCP, and public APIs AppFlowy is open-source and can be self-hosted on your infrastructure, in your cloud, or in fully air-gapped environments. It supports local AI models for processing and embedding, ensuring complete data control and compliance with regulatory requirements. The platform offers transparent development with an active global community and provides migration tools to transition from other platforms without compromising data security.
Open-source Notion & Miro alternative with docs, whiteboards, databases, and AI in one local-first workspace
AFFiNE is a next-generation workspace that merges docs, whiteboards, and databases into a single local-first platform. Built for creativity and productivity, it combines the best of Notion, Miro, and Obsidian with integrated AI capabilities. - All-in-one workspace: Unified interface for documents, whiteboards, and databases - Local-first architecture: Works offline with real-time sync across devices - AI integration: Built-in AI assistant for writing, drawing, and planning - Collaboration tools: Edgeless whiteboards for limitless team creativity - Team hub: Unified document space for teams of all sizes - Cross-platform: Available as desktop, web, and mobile apps - Extensible: Supports templates and custom workflows - Privacy-focused: Self-hosting and private cloud options available AFFiNE is open-source and can be self-hosted for complete data control. The platform supports private cloud deployments and offers enterprise solutions with dedicated support. The codebase is available on GitHub under the MIT license, making it suitable for both personal and commercial use.
Privacy-first personal knowledge management
SiYuan is a privacy-first personal knowledge management (PKM) system that supports Markdown, block-level references, and bidirectional links. Designed for local-first workflows with optional end-to-end encrypted cloud sync. - Block-based editing: Work with content at the paragraph level for granular organization - Markdown & WYSIWYG: Write in Markdown or use a visual editor - Bidirectional linking: Create connections between notes effortlessly - Block references: Embed and reuse content across documents - End-to-end encrypted sync: Secure cloud synchronization with zero-knowledge architecture - Database & tables: Organize knowledge with structured data - PDF annotation: Highlight and annotate PDFs directly - Cross-platform: Available on Linux, Windows, macOS, and mobile - Extensible: Customize with themes, plugins, and widgets - Search & filtering: Advanced query syntax for finding information quickly - Web clipping: Save articles and web content directly to your knowledge base SiYuan is open-source software (AGPL-3.0) with self-hosting capabilities. The core application runs locally while optional cloud services provide encrypted sync and backup. Docker images are available for easy deployment. The project emphasizes privacy with no telemetry and end-to-end encryption for all cloud features.
Modern team knowledge base & wiki
Outline is a modern team knowledge base designed to organize internal documentation, product specs, support answers, meeting notes, onboarding materials, and more. Built for speed and collaboration, it offers a blazing-fast editor with markdown support, slash commands, and interactive embeds. - Intuitive Editing: Blazing-fast editor with markdown support, slash commands, and interactive embeds. - Real-time Collaboration: Multiplayer collaboration with comments, threads, and organized conversations. - AI-Powered Search: Instant workspace search and AI-driven answers to document questions. - Slack Integration: Search, share, and ask questions directly from Slack without leaving the chat. - Public & Private Sharing: Share documents publicly via link or privately with teams, using custom branding. - Security & Permissions: Granular read/write permissions, user groups, guest access, and public sharing controls. - 20+ Integrations: Native integrations with tools like Slack, Figma, and Loom, plus an open API for custom integrations. - Multi-language Support: RTL support and translations for 20+ languages, including French, Spanish, German, Korean, and Chinese. - Dark Mode: Built-in dark mode for comfortable night-time use. - Self-Hosting: Deploy on-premises or in your own cloud infrastructure. - Open Source: Source code is publicly available on GitHub. Outline is open-source and can be self-hosted on your own server. It supports custom domains, white-labeling, and is built with modern web technologies. The platform is GDPR compliant and offers enterprise-grade security features, including audit logs and granular access controls. For cloud hosting, a 30-day free trial is available.
Enterprise-ready on-premise wiki for teams
Docmost is an enterprise-grade wiki platform designed for secure on-premise knowledge management. Built for teams that need full control over their documentation while maintaining compliance with strict regulatory standards. - Real-time Collaboration: Edit pages together with live cursors and instant sync across users and devices. - Self-Hosted AI Suite: Deploy AI chat, search, and MCP support with your choice of LLMs (Ollama, vLLM, OpenAI, etc.). - Granular Permissions: Role-based access control (RBAC) with groups, viewing, editing, and admin permissions. - Page Verification: Workflow-based content verification to meet ISO 9001, ISO 27001, SOC 2, and other compliance standards. - Team Spaces: Dedicated spaces for teams, projects, or departments to organize knowledge. - Public Sharing: Share selected pages publicly without exposing your entire wiki. - Built-in Diagramming: Create flowcharts, UML, network diagrams, and org charts with Draw.io, Excalidraw, and Mermaid. - Enterprise SSO: Seamless integration with SAML 2.0, OpenID Connect, and LDAP identity providers. Docmost is a self-hosted solution that can be deployed on-premises or in your private cloud. It supports Docker, Kubernetes, and traditional server setups. The platform is designed for high availability and scalability, making it suitable for organizations of all sizes. Compliance features include ITAR, FedRAMP, and GDPR support out of the box.
Open-source collaborative document editor
Docs is an open-source, web-native document editor designed for real-time collaboration, structured knowledge, and full data ownership. Whether you self-host it or use a public instance, Docs empowers teams to create, organize, and share documents effortlessly. - Real-time collaboration with live cursors, presence indicators, and comments - Block-based editing using slash commands, tables, columns, and collapsible sections - Knowledge organization through nested documents and hierarchies - Granular access control for viewing, commenting, or editing permissions - Import & export support for .docx, .md, .odt, and .pdf formats - Version history with rollback capabilities for every save - Fast search to quickly find and pin frequently accessed documents - Self-hosting with full data ownership and no third-party dependencies - Accessibility compliance with ongoing WCAG/RGAA improvements - Optional AI integration for summarization, rewriting, translation, and slide creation - Built on open-source foundations: Next.js, Django REST Framework, Yjs, BlockNote.js - Self-hostable via Docker Compose, Kubernetes, Nix, or YunoHost - 100% MIT licensed with no vendor lock-in - Verified Digital Public Good by the DPG Alliance - AI integration supports custom LLM providers or Mistral models via Albert API - Security note: Documents are not end-to-end encrypted (not suitable for classified data)
Privacy-first all-in-one workspace for notes and collaboration
Anytype is a privacy-first workspace that combines notes, tasks, databases, and chats into a single secure environment. Built with end-to-end encryption, your data remains fully owned and controlled by you, accessible only through your device. - Absolute Privacy & Security: All data is encrypted locally with keys you control. No servers or gatekeepers involved. - Offline-First Operation: Works seamlessly without internet access. Syncs peer-to-peer over local networks when online. - Block-Based Editor: Compose notes, tasks, and databases using a flexible, no-code block editor. - Visual Databases: Create tables, Kanban boards, galleries, and graph views to organize information your way. - Cross-Platform Sync: Native apps for iOS, Android, and desktop with fast, reliable synchronization. - Open Protocols: Build custom apps freely without permission requirements or vendor lock-in. - Self-Hosting Support: Store data locally and self-host backups wherever you prefer. - Templates & Widgets: Jumpstart projects with pre-built templates and customizable widgets. Anytype uses peer-to-peer synchronization and local-first architecture. While the core app is open-source (TypeScript), the sync server and some features are proprietary. Self-hosting is supported for backups, and the open protocols allow for custom app development. The project is developed by Any, a Swiss association, ensuring GDPR compliance and EU data residency standards.
Open-source Slack and Notion alternative
Colanode is a modern, all-in-one collaboration platform designed for teams seeking a flexible and self-hostable alternative to Slack and Notion. Built with local-first principles and powered by CRDTs, it ensures seamless synchronization and conflict-free collaboration across devices. - Local-first architecture: Save work to your device first, sync in the background for offline access and reduced latency. - Conflict-free collaboration: Powered by CRDTs (Conflict-free Replicated Data Types) for smooth multi-player editing without conflicts. - Self-hosting or cloud: Deploy on your own infrastructure or use the managed cloud version—your data, your choice. - Integrated workspace: Combine chat, rich text pages, databases, and file management in a single platform. - Real-time chat: Communicate with individuals or teams through channels with instant messaging. - Rich text pages: Create documents, wikis, and notes using an intuitive editor similar to Notion. - Structured databases: Organize information with custom fields, dynamic views (table, kanban, calendar), and relational data. - File management: Securely store, share, and manage files within dedicated workspaces. Colanode is open-source and designed for easy self-hosting. It supports deployment on various platforms including Docker, Kubernetes, and bare metal. Detailed self-hosting guides and documentation are available to help you get started. The platform is built with modern web technologies and prioritizes performance, security, and scalability.
Open source enterprise wiki and knowledge base
XWiki is a powerful open-source wiki and knowledge management platform designed for teams and enterprises. It offers flexible deployment options, including self-hosting and cloud hosting, with both standard and customizable solutions to fit diverse organizational needs. - Collaborative Knowledge Base: Create, edit, and organize documentation with real-time collaboration. - Customizable Workspaces: Tailor wikis to specific use cases like knowledge bases, extranets, or digital workplaces. - Enterprise-Grade Security: Built-in access control, audit logs, and compliance with ISO standards. - Integration Capabilities: Connect with third-party tools and business applications via connectors. - Multi-Format Support: Embed images, videos, tables, and macros for rich content creation. - Version Control: Track changes and restore previous versions of documents. - Scalable Deployment: Available as self-hosted software or managed cloud service. - Business Apps & Connectors: Pre-built applications for common enterprise needs. - Open Source: Fully open-source under LGPL license (GitHub repository available). - Deployment Options: Self-hosted on your infrastructure or hosted by XWiki SAS in the cloud. - Tech Stack: Java-based platform with support for PostgreSQL, MySQL, and other databases. - Custom Development: Professional services for tailored solutions and integrations. - Security & Compliance: GDPR compliant with ISO 27001 certification.
All-in-one workspace for team docs and projects
Orgnise is an all-in-one workspace designed to centralize team knowledge, documentation, and workflows. It combines a Notion-style editor with collections and boards, allowing teams to write docs, organize information, and track progress without switching between tools. - Notion-style editor with slash commands, headings, lists, and embeds for rich document creation - Collections & boards to organize work by projects, teams, or workflows (e.g., Kanban-style boards) - Unified workspace where pages belong to collections and can move across boards without duplication - Team collaboration with shared spaces for inviting members and aligning on projects - Use-case specific templates for engineering, customer support, project management, and company-wide collaboration - Free to start with no credit card required, offering a generous free tier Orgnise is a cloud-based SaaS with no self-hosting option currently available. The application is built for ease of use and scalability, with a focus on team collaboration and workflow management. For enterprise needs, Orgnise offers dedicated solutions and support. Learn more about pricing and enterprise options.
About Nuclino
Nuclino is a modern, simple, and blazingly fast collaboration tool designed to bring knowledge, docs, and projects together in one place. Whether you're managing projects, sharing ideas, or documenting processes, Nuclino replaces multiple tools with a single unified workspace, reducing context switching and boosting productivity.
Key Features of Nuclino
- Unified Workspace: Replace scattered tools with one platform for docs, projects, and knowledge management.
- Super Simple & Intuitive: Designed for ease of use with minimal complexity or clutter.
- Blazingly Fast: Features instant search, hotkeys, and quick setup for seamless collaboration.
- Real-Time Collaboration: Work together with your team in a shared space, with changes reflected instantly.
- Flexible Organization: Structure content with folders, boards, and links to fit your workflow.
- Integrations & Apps: Connect with tools like Slack, Google Drive, and more to streamline workflows.
- Sidekick (AI): AI-powered assistant for drafting, summarizing, and enhancing content.
- Canvas: Visualize ideas and projects in a flexible, canvas-based format.
- Security & Privacy: Enterprise-grade security with GDPR compliance and data encryption.
Tech / Self-Hosting
Nuclino is a cloud-based SaaS solution and does not offer self-hosting options. The platform is built with a focus on speed, security, and scalability, ensuring reliable performance for teams of all sizes. For teams requiring on-premise solutions, Nuclino provides robust API access for custom integrations.