App Launch Checklist - Planning tool for launching your app successfully
Optimizely - A/B testing you'll actually use.
Content Marketing Stack - A curated directory of content marketing resources
SplitMetrics - SplitMetrics is the A/B testing platform for App Store and Google Play page to discover the most converting icons, screenshots, video, etc.
Where To Post Your Product - A curated collection of 280+ websites to share your startup
UserReplay - Customer experience management software for improving conversion rates.