How did I ever live before Software as a Service?

Now that I’m working on freelance projects again, the first administrative tasks that came up were setting up new Basecamp and Freshbooks accounts. I guess that I always knew I relied on these two applications, but it’s funny how central they are to any project work I contemplate.  So how did I live before SaaS?  As I recall — and it’s been a few years — there used to be a lot of email attachments and reminding team members which version of which project plan / requirements / invoice was current.