Super Productivity

Simple yet feature-rich, works both as a desktop app and in your browser! You have full control over your data :)

It can split tasks, grab stuff I have to do and put it in a schedule (so the division between to-do lists and schedules is trivial), and let me guess how much time a task will take and compare that to how much time I actually spent. I like that there are the broad Epic projects that can be broken down into smaller ones. Also, I like that it's open source and not milked by corporate overlords who care more about maximizing profits than making something interesting and worthwhile.