Balto - Easy feedback with screenshot / videos for your beta apps
HubSpot - Grow Better With HubSpot: Software that's powerful, not overpowering. Seamlessly connect your data, teams, and customers on one CRM platform that grows with your business.
buddybuild - Buddybuild ties together continuous integration, continuous delivery and an iterative feedback solution into a single, seamless system. With buddybuild, you can focus on what matters most: creating awesome apps.
MailChimp - MailChimp is the best way to design, send, and share email newsletters.
Twitter Audience Insights - Loads of info about your followers, their interests, & more
Marketo - Marketo's powerful marketing automation software helps marketers master the art & science of digital marketing to engage customers and prospects.