The best open source alternative to Microsoft To Do is Super Productivity. If that doesn't suit you, we've compiled a ranked list of other open source Microsoft To Do alternatives to help you find a suitable replacement. Other interesting open source alternatives to Microsoft To Do are: Vikunja and Donetick.
Microsoft To Do alternatives are mainly Task Management Tools but may also be Time Tracking Tools or Project Management Suites. Browse these if you want a narrower list of alternatives or looking for a specific functionality of Microsoft To Do.
Privacy-first task manager combining task lists, Kanban, Pomodoro timers, time tracking, and integrations with GitHub, GitLab, and Jira. No account required, works offline.

Super Productivity is a time and task management app built for people who want to do focused, meaningful work without the overhead of accounts, subscriptions, or cloud lock-in. It runs on Windows, macOS, Linux, Android, iOS, and the web. Your data stays on your device by default.
It goes well beyond a simple to-do list. You can organize work as a flat list, a Kanban board, or an Eisenhower Matrix, then drop into a distraction-free focus mode with a built-in Pomodoro timer and customizable breaks. Time tracking is built in, not bolted on, so you can see where your day actually went without switching to a separate tool like ActivityWatch or SolidTime.
Key capabilities include:
It's a practical fit for developers, freelancers, students, and anyone running a GTD-style system. Compared to tools like Todoist, it requires no account and no paid tier to access core features. Everything works offline. The open-source codebase is actively maintained, with a community that ships meaningful updates regularly.
A powerful, open-source task management platform for teams and individuals, offering customizable workflows and seamless integration.

Vikunja is a versatile, open-source task management solution designed to boost productivity and streamline collaboration. Whether you're working solo or managing a team, Vikunja adapts to your unique needs.
Key benefits of Vikunja include:
Vikunja combines the simplicity of personal to-do lists with the power of enterprise project management tools. Its intuitive interface and feature-rich environment make it an ideal choice for individuals, small teams, and large organizations alike. Experience the freedom of open-source task management with Vikunja and take control of your productivity today.
Organize tasks and chores with intelligent scheduling, fair assignment, and collaboration features. Perfect for families and teams with smart notifications.

Smart task management that keeps individuals and families organized with intelligent scheduling and fair task distribution. Whether managing personal tasks or coordinating household chores, this tool provides robust assignment options and flexible scheduling.
Key features include:
Perfect for tablet installations in kitchens or offices, providing always-accessible task management for shared spaces. Open-source with privacy focus, offering web app, mobile apps, and self-hosted options.
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