Top 18 open-source products relevant to Task Management, Project Management, and Todos

Org: an Emacs Mode for Notes, Planning, and Authoring.

Open Source

The open-source Trello-like kanban (built with Meteor).

Open Source

Customizable personal productivity tool .

Open Source paid Free Trial

Track your tasks and projects in a plain text file, todo.txt. A todo.

Open Source

Taskwarrior is an ambitious project bringing sophisticated capabilities to a simple and elegant...

Open Source

Open-source, privacy-friendly to-do lists & reminders for Android. Supports Google Tasks, DAVx⁵, CalDAV, EteSync, and DecSync CC.

Open Source

The new task app from the team that brought us Wunderlist, Microsoft To-Do is a great way to manage tasks. List everything you need to do—or import tasks from Outlook, Todoist, and Wunderlist so you don't have to start over.

Open Source

Vikunja is an open-source, self-hosted to-do application for all platforms.

Open Source paid Free Trial

Free and Open Source Minimalist Weekly Planner and To-Do list App Focused on Privacy.

Open Source free

Calcurse is a calendar and scheduling application for the command line.

Open Source

Create and work with tasks inside Slack.

Open Source

A tasks app for Nextcloud.

Open Source

A good, simple outliner for macOS and iOS.

Open Source

Simple way to manage your todo list in AJAX style. Written in PHP and jQuery.

Open Source

Autosaving sticky note with support for multiple notes without needing multiple windows.

Open Source

We're the creators of MongoDB, the most popular database for modern apps, and MongoDB Atlas, the global cloud database on AWS, Azure, and GCP. Easily organize, use, and enrich data — in real time, anywhere.

Open Source

CLI task manager built with Haskell and SQLite.

Open Source

Open‑source, cross‑platform task app that stays simple for individuals and adds flexible workflows for small and midsize teams. Offline‑ready.

Open Source freemium €2.0 / Monthly