Worktile helps teams collaborate on projects, share files and communicate with each other, all from one central, searchable workplace that’s available anytime, anywhere. It is a team task manager that makes it easy to delegate tasks, prioritize to-do lists, and make sure nothing gets missed.
Nozbe is a tool that helps busy professionals and teams organize time and projects "...solid online organizer specific to GTD..."...
Manage everything related to your projects, including tasks and resources.
This program enables you to create to-do lists on your Mac.
Compose, playback, and edit music.
Keep track of the time you spend doing a certain job.