SlickTasks is a powerful task management / to do list application for BlackBerry.
SlickTasks lets you easily organise your tasks and sub-tasks into a folder tree. You can set reminder for your tasks, so you never forget to complete the task again. With SlickTasks, you can stay focused and get things done. You can even create recurring tasks for your daily, weekly, monthly or yearly tasks.
BlackBerry Device Software Version 4.2 or higher.