Task Manager |link| Free -

Excellent mobile and desktop sync, plus the ability to organize tasks into projects and sub-tasks. 2. Microsoft To Do: The Completely Free Powerhouse

Reminders, file attachments, and collaboration tools that are usually "premium" in other apps. 3. Trello: The Visual Thinker’s Choice task manager free

People who want their notes, tasks, and wikis all in one place. Excellent mobile and desktop sync, plus the ability

While technically a note-taking tool, Notion’s "Database" feature makes it a formidable task manager. You can view your tasks as a list, a board, a calendar, or even a timeline. It is infinitely customizable, though it does have a bit of a learning curve. Excellent mobile and desktop sync