You searched a paid product
Todoist does 3 jobs: tasks, assignees and deadlines, Kanban task boards, task reminders. Most projects replace one or two of them, so pick the job you actually need.
Open-source alternatives to Todoist that run locally, allow commercial use and need no paid API include Kanboard (Kanban task boards; MIT). None of the 2 projects we track covers all 3 Todoist jobs, so most people combine two or more.
Minimal self-hosted kanban board in PHP with WIP limits, subtasks, filters and automatic actions; MIT licensed and in maintenance mode.
Self-hosted task manager with list, kanban, Gantt and table views, shipped as one binary with bundled SQLite; AGPL-3.0.
No project meets all of your requirements. The list below shows what you'd need to relax.
Yes. Kanboard and Vikunja are free to download and run on your own computer without paid API keys. Each covers only part of what Todoist does, so check which job you need.
Yes, with Vikunja (AGPL-3.0-or-later). Check the hardware notes and licence conditions on each page before you start.
Yes, with Kanboard (MIT) and Vikunja (AGPL-3.0-or-later). Check the hardware notes and licence conditions on each page before you start.
Confirmed: Kanboard. With conditions: Vikunja. This is not legal advice; read each licence.
Not as of 2026-10-15. Tasks, assignees and deadlines, Kanban task boards and task reminders are covered by different projects.