Habitica is an open-source gamified task manager turning Habits, Dailies, and To-Dos into RPG quests with avatars, gear and social features.

14.1k stars4.4k forkslast commit Actively maintained
Any.do is a cross-platform task and to-do list application for individuals and teams. It provides lists, reminders, recurring tasks and subtasks, projects, calendar integration, task sharing and collaboration, and mobile and desktop clients.
Habitica is an open-source gamified task manager turning Habits, Dailies, and To-Dos into RPG quests with avatars, gear and social features.

14.1k stars4.4k forkslast commit Actively maintained
Open-source CLI task manager with tagging, projects, priorities, recurrence, filtering, extensible hooks and optional sync.

6k stars421 forksMITlast commit Actively maintained
Vikunja is an open-source to-do and task management app with projects, sharing, assignments, and multiple views like list, Kanban, Gantt, and table.

5.2k stars642 forksAGPL-3.0last commit Actively maintained
Single-file, offline-capable kanban/task board that stores boards in the browser; supports multiple boards, drag-and-drop, undo/redo, export/import and local backup agents.

4.1k stars284 forkslast commit Likely dormant
Open-source, self-hosted task and project manager with hierarchical Areas → Projects → Tasks, smart recurring tasks, Telegram and API integrations.

3.3k stars242 forksMITlast commit Actively maintained
Open-source task and chore manager for individuals and groups featuring natural-language scheduling, assignee rotation, NFC triggers, REST API, and S3-compatible storage.

2.5k stars193 forksAGPL-3.0last commit Actively maintained
Self-hosted kanban-style task board that stores lanes as folders and tasks as Markdown files, with tags, theming, reverse-proxy support, and optional PWA install.

2.2k stars105 forksMITlast commit Slowing down
Open-source Rails web app for David Allen's GTD: manage next actions, contexts, projects, tags, feeds and statistics; Docker-friendly and multi-user.

1.2k stars530 forksGPL-2.0last commit Actively maintained
Modern, privacy-focused task manager with kanban, calendar, natural-language dates, recurring tasks, and JSON file storage.

1.1k stars24 forkslast commit Slowing down
Nextcloud Tasks provides a web-based to-do list with priorities, due dates, subtasks, and CalDAV synchronization with mobile and desktop task clients.

702 stars115 forksAGPL-3.0last commit Actively maintained
Open-source AJAX to-do list app with multiple lists, tags, priorities, due dates and support for MySQL, PostgreSQL and SQLite.

200 stars58 forkslast commit Actively maintained
Mobile-first, real-time shared shopping and small collaborative todo app with boards, lists, checkable items, search, PWA support and MongoDB backend.
195 stars17 forksAGPL-3.0last commit Actively maintained
Every option on this page is open source and free to run on your own hardware, so you own the data and there is no subscription to cancel. 9 of 12 shipped a commit in the last six months. Licences in this list: MIT, AGPL-3.0, GPL-2.0. In exchange you take on hosting, backups and updates yourself.
Browse everything in Tasks, Habits & Time Tracking.