As a freelancer : Project management : BaseCamp Personnal GTD improvement : RescueTime Invoices & estimates : Freshbooks Accounting : my accountant uses Sim

As a freelancer : Project management : BaseCamp Personnal GTD improvement : RescueTime Invoices & estimates : Freshbooks Accounting : my accountant uses Simply Accounting (Windows app on my vmware box) Files : dropbox Source control : Git on RepositoryHosting.com (6$/month and i can manage any number of SVN/Git repositories. And it just works) Synch iCal with google calendar Synch contacts with Plaxo