From the Chargify Blog:

Over the last decade, software as a service (SaaS) has taken the computing world by storm. By being able to deploy software over the web, people no longer have to download bulky software packages and it’s given businesses a lot more flexibility. Today, SaaS is used to power a wide variety of business applications: sales force automation, CRM, document management, financials and of course Chargify.

In honor of SaaS flexibility and the recent release of the iPhone 4, we review some of today’s best SaaS apps for the iPhone and iPad: