Suggest me good translation workflow management tool?


I use Translation Office (latest version) but there is no chance I can manage a team of translators as it is intended for the individual freelancer. I have downloaded a trial copy of T.O.M. but the interface does not look that user friendly and inserting extra tax deductions on invoices causes trouble. What do you guys use as a project management tool? I went through many resources and also checked workflow management software but did not find anything better.

Any help will be appreciated.
Thank you.