Startup School - How to start a startup, by Y Combinator
Control - Control is a leading Stripe and PayPal analytics and alerts platform for SaaS, subscription and eCommerce businesses, enabling instant intelligence anywhere via its Android, iOS, and web-based products.
Owlead - Grow your Twitter with valuable followers, effortless
Trim - Manage and cancel your paid subscriptions
Hyper Founder Program - An 8-week founder program inspired by Product Hunt
RevenueStory - Subscription analytics built on top of your billing system