– To Do?
– Things?
– Planner?
– Reminders?
– Todoist?
– Pen and paper?

The list of solutions seems endless (especially digitally), and they cater for individual / collaborative tasks.
Many are dependent too on what platform you use e.g. they only work on iOS.
The main problem, I have found to my detriment, is that I have spent too long working out what the best solution is (countless reading of articles on ‘Medium’) and then, I don’t have time to do the task!
My advice: keep it simple — work out what’s best for you and stick with it.