The best open source alternative to TickTick is Super Productivity. If that doesn't suit you, our users have ranked more than 100 alternatives to TickTick and loads of them is open source so hopefully you can find a suitable replacement. Other interesting open source alternatives to TickTick are Tasks.org, Wekan, Planify and Snaptick.
Free, open-source software offering task management and time tracking across Linux, MacOS, and Windows with Jira, GitHub, and GitLab integration, plus a pomodoro timer for breaks and focus. Designed with privacy in mind, it requires no user data collection or registration.
Tasks is libre open-source software, based on the original source code from the popular Astrid Tasks & To Do List! Tasks is easy-to-use, feature-packed, flexible and customizable, and synchronizes with a variety of services.
Open-source kanban board featuring real-time collaboration, customizable labels, filtered views, card comments, attachments, member assignments, permission roles, checklists, notifications, responsive design, integration options, and self-hosting support.
Snaptick is a user-friendly app designed to boost your productivity by helping you organize and achieve your daily plans effortlessly. With a clean and easy-to-use interface, this app offers essential features like task creation and editing, task prioritization, a built-in...
Organize projects with deeply nested tasks, multi-language support, and flexible XML storage. Streamline scheduling, customize printing with stylesheets, and collaborate efficiently on multiple projects, including IT and general GTD use, on Windows or Linux via WINE.
Org mode is for keeping notes, maintaining TODO lists, planning projects, and authoring documents with a fast and effective plain-text system.
Tolaria is a desktop app for managing markdown knowledge bases. People use it for a variety of use cases:
Lightweight, self-hosted app for managing personal checklists and notes with drag and drop, progress bars, Kanban boards, Markdown WYSIWYG editor, file-based data, user management, sharing options, themes, open source, and API access.
Think of Vikunja like the notebook you have with all your things to keep track of. But better.
sleek is an open-source (FOSS) todo manager based on the todo.txt syntax. It's available for Windows, MacOS and Linux.
WeekToDo is a free and Open Source minimalist weekly planner. With WeekToDo you can start improving your productivity by defining and managing your week and your tasks in an easy and intuitive way.
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WeekToDo is my preferred alternative due to it's minimalistic approach within the practical weekly structure. Those features are fitting my needs for a ToDo List Manager more. However there doesn't seem to be a straightforward way for to sync lists with other devices, which is probably a downside for many.