The best open source alternative to Todoist is Super Productivity. If that doesn't suit you, our users have ranked more than 100 alternatives to Todoist and many of them is open source so hopefully you can find a suitable replacement. Other interesting open source alternatives to Todoist are Tasks.org, Planify, Markor and ToDoList.
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.
Markor is a TextEditor for Android, versatile, flexible, and lightweight. Markor utilizes simple markup formats like Markdown and todo.txt for note-taking and list management. It is versatile at working with text; it can also be used for keeping bookmarks, copying to clipboard...
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.
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.
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.
Take notes on any website, organize notes for whole domains or specific pages, access all in a management page, use export, import, tagging, search, sticky-notes, auto-saving, and customizable keyboard shortcuts, all in a locally stored browser extension.
A complete Getting Things Done (GTD) productivity system for desktop and mobile. Mind Like Water.
Offline desktop task manager prioritizing privacy with full local data storage, multiple independent profiles with PIN lock, drag-and-drop task management, flexible priorities, tags, secure recurring reminders, rich file attachments, and customizable UI themes.
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Super Productivity is amazing. A lot of cool features, but lose in terms of integrations.