I am always looking for good web-based collaboration tools as I constantly need to collaborate virtually. That’s how I found Onehub, this tool is not simply for collaboration, it can be used as an FTP replacement. With a free account you can only set up one hub, where you basically can  upload 1 GB of files. Your hub can include calendars as well in addition to discussion boards, task lists, images, RSS feeds and video.

Paid accounts are available too – from $19 per month up to $249 per month. Details are available on the Onehub website.

Central Desktop  is a great collaboration and project management platform.  It has too much power for a solopreneur, but is great for teams and workgroups to share information and communicate with other members.  Paid accounts start from $25 per month.