VFX Nexus is (Copied from their website):
"A hosted web application for visual effects studios of all sizes to collaborate and track their entire workflow:
- Accessible anywhere
- Unlimited projects, shots, tasks
- Granular user permissions
- Share files worldwide new!
- Customizable to your workflow
- Secure, fast and quick setup
- Monthly subscription pricing
VFX Nexus has been central to the success of more than 20 feature films as well as numerous television and commercial productions."