If you need to manage complex projects, use a project management tool. But if you need to manage lots of tasks that don’t really require dependencies and all that fun stuff, try Remember the Milk.
Remember the Milk is a great, simple solution for task tracking.. Typing “Client Z proposal due in 3 weeks” schedules the task for three weeks out. Keyboard shortcuts let you postpone, prioritize and tag tasks quickly, and a mobile version lets you update/add tasks on the go.
Best of all, it’s free – they DO have a paid version ($25 a year, still crazy cheap) but the additional features, which are mostly related to the mobile apps, aren’t enough to entice me.
Also, look how cute that cow is. D’awwa.