Collaboration:  

Seaveus offers an online version and a self-hosted version of this software; we looked at the online version that is priced at only $4.99 per user/month for up to 99 users. In terms of collaboration in regards to cross compatibility, this program can import/export from MS Projects with Project2Project and it can export reports in Excel or PDF form. You can also import projects from MS Excel 2003/2007. In addition, contacts can be imported from Yahoo, MS Outlook 2003/2007, Gmail, Hotmail and AOL as well as from the resources listed in your space.

It has an accessory called Buzzer for Blackberry that works with Blackberry devices with an operating system of 4.3 or higher. This app is free and can be used to receive project updates and changes on your Blackberry. It can also send updates to personal pages like for iGoogle, netvibes and pageflakes. Of course you can also subscribe to an RSS feed, specifically FreeReader, FeedDemon and RSS Bandit RSS feed protocols.

Though this service does not have a forum, it does have a wiki module. Here team members can contribute and share ideas easily.
 

Resource Management:  

This project management service has bit of a weak spot in this area; it can manage basic human type resources, but not materials and only a few resource details. When you add a resource it asks for name, role, email and project, it does not ask for things like talents or skills. It will also allow you to set resources as active or inactive.

ProjectOffice.net also does not have the capacity to manage physical resources like projectors, laptops or company cars. This service has the basic necessities for handling projects with small teams who have no need to track materials or supplies, which might cover most small businesses or a team of independent consultants that manage their own resources.