A task manager is probably the first thing you might want to install on your Android device, and you won't find a better tool for the job than Astrid. This open source task management utility sports not only a cute application icon -- it also offers all the tools you need to efficiently manage your tasks. A user-friendly interface makes it extremely easy to create new tasks and edit existing ones. The task editing screen of Astrid's interface is split into three sections: Basic, Dates, and Alarms. The Basic section allows you to set the task's priority, assign tags, specify the time it would take to complete the task, and attach a note to it. In the Dates section, you can specify a deadline and configure recurring events. Here you can also specify time already spent on the task. If you enable the Add Task To Calendar option, Astrid conveniently adds the task to your Google Calendar. As the name suggests, the Alerts section lets you configure periodic and fixed reminders as well as specify when you want the reminder to kick in.

To keep tabs on your tasks, Astrid offers the Tags and the Sort/Filter features. The former lets you quickly locate tasks containing a specific tag, while the latter can be used to sort tasks using available sorting criteria (e.g., Sort By Name, Sort By Due Date, Sort Reverse, etc). All these are nice features, but what makes Astrid really shine, is its ability to synchronize data with Remember The Milk, one of the most popular task managers on the Web. This effectively turns Astrid into a mobile client which beats even Remember The Milk's own iPhone application.