Best Open Source ClickUp Alternative in 2026
Last Updated: October 20, 2025
ClickUp is the world's only all-in-one productivity platform that flexes to the way people want to work. Founded in 2017 and based in San Diego, it replaces all individual workplace productivity tools with a single, unified workspace.
The platform combines project management, task tracking, document collaboration, whiteboards, spreadsheets, time tracking, and goal setting in one place. Unlike traditional project management tools that focus on just one area, ClickUp aims to be the "everything app for work" that eliminates app switching and increases team efficiency.
The best alternative to ClickUp is 
Joplin
JoplinFree Open-Source Note-Taking App with Encryption.
So, here are the 1 best alternatives to ClickUp:
Joplin is a powerful tool for capturing and organizing your thoughts, to-do lists, and information. It supports rich text and Markdown formatting, allowing you to create notes with images, attachments, tables, and even code snippets. You can clip web pages directly from your browser and save them as notes for later reference.
What makes Joplin special is its focus on privacy and data ownership. Your notes are stored locally on your devices, not on someone else's server. When you sync across devices, everything is protected with end-to-end encryption, meaning only you can read your content.
The app offers multiple sync options including Dropbox, OneDrive, Nextcloud, or Joplin's own cloud service. You can also customize Joplin with plugins and themes to match your workflow perfectly.