Web 2.0 Online Collaboration Solution

Hello, We need an advanced online collaboration solution with on AJAX-based interface. Linux hosting, DB and language is up to contractor. The solution will be using standard projects-tasks systems, graphs calendar and some other less important features. NDA and complete FS of the project will be given to the shortlisted bidders. The closest examples of what we are to achieve: [login to view URL], where we like the structure but dislike the interface which looks quite old [login to view URL], which is having the interface we ideally would like reach, but doesn't have graphs and a couple of other features Please bid only if you are confident your company is able to create a competitive solution in a reasonable time. You are to speak good English, we are going to have a lot of phone communications. Please check both examples provided, they have a free and quick demo. Thank you, Ernesto