Great program, definitely needed if using Salesforce.
Propel does just that. It "propels" the work you do by streamlining items in one system. It provides for easily accessed design reviews, change order management, and it integrates with Salesforce platform which is very useful if your company uses Salesforce.
It is somewhat reliant on Salesforce, and overall it has the ability to maximize tools but takes some training to understand.
Likelihood to recommend: 9/10
Contact Propel for pricing information.