Balto - Easy feedback with screenshot / videos for your beta apps
Owlead - Grow your Twitter with valuable followers, effortless
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.
Twitter Audience Insights - Loads of info about your followers, their interests, & more
SE Ranking - All-in-One cloud-based SEO software for agencies, marketing teams and webmasters
User Interviews + Lookback - Target any audience & record their feedback