The best open source alternative to Notion is Affine. If that doesn't suit you, we've compiled a ranked list of other open source Notion alternatives to help you find a suitable replacement. Other interesting open source alternatives to Notion are: AppFlowy, Memos, SiYuan, and Logseq.
Notion alternatives are mainly Personal Knowledge Management (PKM) Tools but may also be Note-Taking Tools or Collaborative Notes & Wikis. Browse these if you want a narrower list of alternatives or looking for a specific functionality of Notion.
All-in-one workspace for note-taking, whiteboarding, and task management with real-time collaboration and local-first architecture.

Affine is a powerful, open-source platform that revolutionizes the way teams and individuals create, organize, and share knowledge. With its innovative approach to collaborative work, Affine combines the best features of note-taking, whiteboarding, and task management into a seamless, intuitive interface.
Key benefits of Affine include:
Affine's unique blend of features makes it an ideal choice for researchers, project managers, designers, and anyone looking to enhance their productivity and creativity. Experience the future of collaborative knowledge work with Affine.
Looking for open source alternatives to other popular services? Check out other posts in the alternatives series and openalternative.co, a directory of open source software with filters for tags and alternatives for easy browsing and discovery.
An open-source alternative to Notion, offering powerful note-taking, task management, and database features in a customizable interface.

AppFlowy is a versatile, open-source productivity tool that combines the best features of note-taking apps and project management software. It provides a flexible workspace where you can organize your thoughts, tasks, and projects with ease.
Key benefits of AppFlowy include:
AppFlowy combines the flexibility of a note-taking app with the structure of a project management tool, allowing you to capture ideas, plan projects, and organize information all in one place. Whether you're a student, professional, or creative, AppFlowy adapts to your needs, helping you stay organized and productive.
A self-hosted, open-source solution for secure and efficient note-taking, allowing you to easily capture and share your thoughts.

Memos is a powerful, privacy-focused note-taking solution that puts you in control of your data. This lightweight, open-source tool offers a seamless experience for capturing and organizing your thoughts.
Key features:
Why choose Memos?
Whether you're a student, professional, or creative thinker, Memos provides a streamlined, secure environment for capturing and organizing your ideas. Experience the freedom of open-source, privacy-focused note-taking today!
SiYuan is a personal knowledge management system that prioritizes privacy, supports Markdown, and offers block-level referencing and bidirectional linking.

SiYuan is a robust personal knowledge management system designed with privacy at its core. It offers a unique blend of features that cater to users who value data security and efficient information organization.
Key features of SiYuan include:
SiYuan stands out by combining the power of block-level referencing, bidirectional links, and a privacy-first approach. This makes it an ideal tool for users who need to manage complex information structures while maintaining control over their data. Whether you're a researcher, writer, or knowledge worker, SiYuan provides the tools to refactor your thinking and build a comprehensive personal knowledge base.
A privacy-first, open-source platform for networked thought. Organize, connect, and discover your ideas with ease.

Logseq is a powerful, open-source knowledge management tool that revolutionizes the way you capture, organize, and explore your thoughts. At its core, Logseq functions as a local-first, non-linear notebook that empowers users to create a personalized knowledge graph.
Key benefits of Logseq include:
Whether you're a student, researcher, writer, or professional, Logseq provides a robust framework for capturing, connecting, and cultivating your ideas. Experience the power of networked thought and unlock your full cognitive potential with Logseq.
Secure, fast, and beautiful wiki platform that scales with your team, integrating seamlessly with your existing tools.

Outline is a powerful, open-source wiki and knowledge base platform designed for modern teams. It offers a clean, intuitive interface that makes documenting and sharing information effortless.
Key benefits of Outline include:
Outline prioritizes security with features like SSO, 2FA, and granular access controls. Its sleek, minimalist design ensures a distraction-free writing environment, while its responsive layout adapts seamlessly to any device. Whether you're documenting processes, collaborating on projects, or building an internal knowledge base, Outline provides the tools you need to keep your team aligned and productive.
Looking for open source alternatives to other popular services? Check out other posts in the alternatives series and openalternative.co, a directory of open source software with filters for tags and alternatives for easy browsing and discovery.
An open-source platform that combines project management, team communication, document collaboration, and virtual office spaces in one integrated solution.

Transform your team's workflow with this comprehensive open-source platform that replaces multiple tools with one unified solution. Featuring robust project management capabilities, real-time team communication, and collaborative document editing.
Key highlights include:
The platform excels in remote team collaboration with features like instant notifications, keyboard shortcuts, and advanced filtering. Teams can manage projects, conduct meetings, share documents, and communicate effectively - all within a single, intuitive interface. The built-in virtual office functionality makes remote work feel natural, while the GitHub integration ensures developers stay in sync with their workflow.
A feature-rich wiki platform with real-time collaboration, rich-text editing, advanced permissions, and support for diagrams, translations, and file management.

Docmost transforms team documentation with its powerful collaborative features. The real-time rich-text editor supports simultaneous editing with integrated tools for diagrams (Mermaid, Draw.io, Excalidraw), tables, math equations, and embedded content.
Organization is seamless with nested pages and dedicated spaces for different teams or projects. The robust permissions system with group management ensures precise access control. Content discovery is efficient through Postgres-powered full-text search.
Notable features include:
The platform combines security, flexibility, and ease of use while avoiding vendor lock-in through open standards. Perfect for companies seeking a self-hosted solution for knowledge management, technical documentation, and team collaboration.
Transform document collaboration with real-time editing, version control, and secure sharing features that enhance team productivity and communication.

A powerful document collaboration platform that brings teams together for seamless content creation and editing. Real-time collaboration allows multiple users to work simultaneously on documents, with changes reflected instantly across all users.
The platform offers robust version control to track changes and maintain document history, making it easy to review edits and revert to previous versions when needed. Smart commenting and annotation features enable contextual discussions right within documents.
Key features include:
Whether you're writing business proposals, technical documentation, or creative content, Docs provides the tools needed for efficient document management and team collaboration.
End-to-end encrypted note-taking app with cross-platform sync, rich text editing, and offline support for ultimate privacy and productivity.

Notesnook is the ultimate solution for privacy-conscious individuals who want to keep their thoughts, ideas, and information secure. This powerful note-taking app combines robust security features with a user-friendly interface, making it the perfect choice for both personal and professional use.
Key benefits of Notesnook include:
With Notesnook, you can focus on capturing your ideas and staying productive, knowing that your privacy is protected. Whether you're a student, professional, or creative individual, Notesnook provides the tools you need to manage your digital life securely and efficiently.
The next generation of open-source AI-powered card notes designed to help you quickly capture and organize inspiration so that ideas never run out.

Blinko is a powerful self-hosted note-taking solution that puts you in control of your personal knowledge management. With its intuitive interface, you can:
Perfect for students, researchers, writers, and anyone who wants to build a structured personal knowledge base while maintaining complete control over their data.
Looking for open source alternatives to other popular services? Check out other posts in the alternatives series and openalternative.co, a directory of open source software with filters for tags and alternatives for easy browsing and discovery.
A versatile, open-source tool for organizing thoughts, notes, and data with customizable objects and relational structures.

AnyType revolutionizes personal knowledge management by offering a flexible, open-source platform that adapts to your unique way of thinking. At its core, AnyType allows you to create and connect customizable objects, representing anything from notes and tasks to projects and contacts.
Key benefits of AnyType include:
AnyType empowers you to build a digital second brain that truly reflects your thought processes, making it an indispensable tool for researchers, writers, students, and anyone seeking to organize their digital life more effectively.
Open-source collaboration platform combining real-time chat, document editing, file sharing, and project management. Self-host for complete control.

Colanode is a comprehensive collaboration platform that brings together all the tools your team needs in one self-hosted solution. Unlike traditional cloud-based alternatives, this local-first application gives you complete control over your data while providing instant access to your content.
Key features include:
The platform is designed for teams who value data ownership and privacy while maintaining the collaborative features found in popular tools like Slack and Notion. With self-hosting capabilities, you can deploy Colanode on your own infrastructure, ensuring sensitive information never leaves your control.
Whether you're managing projects, writing documentation, or coordinating with team members, Colanode provides a unified workspace that works both online and offline, making it ideal for distributed teams and organizations with strict data governance requirements.
Ryot is a versatile platform for effortlessly tracking media, fitness, and more, replacing manual methods like spreadsheets.

Ryot is a powerful, all-in-one tracking platform designed to help you manage various aspects of your life with ease. Say goodbye to manual tracking methods and embrace a more efficient way to monitor your media consumption, fitness progress, and more.
Key Features:
Effortless Tracking: Ryot's intuitive interface eliminates the need for manual data entry, saving you time and effort.
Seamless Integration: Connect your favorite apps and services to centralize all your data in one place.
Advanced Analytics: Gain valuable insights with Ryot's visualization tools and trend identification features.
Customizable Experience: Tailor the platform to your unique needs by enabling or disabling specific tracking facets.
Multi-Platform Support: Access your data anytime, anywhere with Ryot's web, mobile, and desktop applications.
Privacy-Focused Sharing: Share your profile data with friends and family without compromising your privacy using limited access links.
Why Choose Ryot?
Ryot streamlines your tracking experience, allowing you to focus on what matters most. Whether you're a movie buff looking to manage your watchlist, a fitness enthusiast tracking your workouts, or simply someone who wants to organize their life better, Ryot provides the tools you need to stay on top of your goals and interests.
With its user-friendly design and powerful features, Ryot is the ultimate solution for anyone looking to upgrade their tracking experience and gain deeper insights into their daily activities and preferences.
XWiki is a flexible, feature-rich wiki software that helps organizations structure and share knowledge efficiently.

XWiki is an enterprise-grade, open-source platform for knowledge management and collaboration. It offers a unique "Structured Wiki" concept, combining the flexibility of wikis with powerful organization features.
Key benefits include:
Structured Knowledge: XWiki goes beyond traditional wikis by allowing users to create structured content, making information easier to organize and find.
Customization: The platform is highly adaptable, supporting custom applications and workflows to meet specific organizational needs.
Collaboration Tools: XWiki provides robust features for team collaboration, including real-time editing, comments, and version control.
Security and Access Control: Granular permissions and access controls ensure that sensitive information remains protected.
Integration: XWiki can integrate with various third-party tools and systems, enhancing its functionality and fitting into existing workflows.
Open Source: As an open-source solution, XWiki offers transparency, community support, and freedom from vendor lock-in.
Scalability: XWiki is designed to handle large amounts of data and users, making it suitable for organizations of all sizes.
Multiple Deployment Options: Available as a cloud service or for on-premises installation, providing flexibility in deployment.
XWiki is trusted by over 800 teams worldwide, including major organizations like Amazon, SNCF, and CNFPT. It's particularly well-suited for creating knowledge bases, managing procedures, building intranets, and developing custom collaborative applications.
Whether you're looking for a standard solution or a custom-tailored platform, XWiki offers the tools and services to streamline your organization's knowledge sharing and collaboration processes.
A local-first note-taking application that prioritizes privacy and efficiency, featuring Markdown support, offline access, and powerful organization tools.

Beaver Notes is a powerful open-source note-taking application built with privacy and productivity in mind. Your notes are stored exclusively on your local device, ensuring complete data privacy and control.
Key features include:
The application combines modern design with powerful features while maintaining simplicity and ease of use. Whether you're taking personal notes, managing projects, or creating documentation, Beaver Notes provides the tools you need without compromising on privacy.
Looking for open source alternatives to other popular services? Check out other posts in the alternatives series and openalternative.co, a directory of open source software with filters for tags and alternatives for easy browsing and discovery.
A customizable, offline-first note editor that lets you format text, create lists, add images, and export to HTML - all while maintaining your privacy.

Darkwrite is a feature-rich note-taking application designed for users who value both functionality and privacy. The editor supports essential formatting options like lists, text styling, and image embedding while maintaining a clean, distraction-free interface.
Key benefits:
Whether you're taking quick notes or working on longer documents, Darkwrite provides the perfect balance of features and simplicity while keeping your data private and secure.
Justnote is a secure note-taking app that lets you easily create and sync notes across devices while maintaining full control of your data.

Justnote is a privacy-focused note-taking app designed for simplicity, speed, and data ownership. Key features include:
Justnote uses blockchain technology from Stacks to create a truly decentralized app where only you can access and control your account and notes. Your data is encrypted and stored on servers of your choice.
With Justnote, you can quickly jot down ideas, to-do lists, and other notes without worrying about privacy or losing access to your data. The clean, distraction-free interface lets you focus on your thoughts.
Whether you need a simple notepad for quick memos or a secure place to store sensitive information, Justnote provides an easy-to-use and private note-taking experience across all your devices.
A versatile project management platform that combines task organization, team collaboration, and workflow automation in one intuitive interface.

Orgnise is a powerful project management solution designed to help teams of all sizes streamline their workflows and boost productivity. With its user-friendly interface and comprehensive feature set, Orgnise makes it easy to plan, track, and execute projects from start to finish.
Key benefits of Orgnise include:
Intuitive Task Management: Create, assign, and prioritize tasks with ease. Use drag-and-drop functionality to organize tasks into customizable lists, boards, or timelines.
Team Collaboration: Foster seamless communication with built-in chat, file sharing, and commenting features. Keep everyone on the same page and reduce email clutter.
Workflow Automation: Set up automated workflows to handle repetitive tasks, notifications, and status updates, saving time and reducing human error.
Customizable Dashboards: Get a bird's-eye view of your projects with personalized dashboards. Monitor progress, track deadlines, and identify bottlenecks at a glance.
Time Tracking and Reporting: Log time spent on tasks and generate detailed reports to analyze team performance and project profitability.
Integration Ecosystem: Connect Orgnise with your favorite tools through a wide range of integrations, including calendar apps, file storage services, and communication platforms.
Whether you're managing complex projects or simply organizing your daily tasks, Orgnise adapts to your needs, helping you stay focused and productive. Experience the power of efficient project management with Orgnise today.