Ask HN: Project Management Apps *for* SaaS Companies

Hey HN. We've been looking for a particularly good PM tool to manage our business (http://soapboxhq.com).

We must be a pretty typical SaaS company in that we have ongoing app updates, larger projects/features, and large client launches scattered in.

Our dev team lives in github, the sales team in salesforce -- ideally I would be looking for a tool to bridge this gap. (roadmap, co-ordinate launches, project updates, any other general business projects/tasks, etc.)

Does anyone out there know of a tool that could be good at this?