Coderway.net - Unlimited creative options
Analyzify - Google tag manager and analytics app for your Shopify store
GoSquared & Slack - Traffic spikes and user notifications sent straight to Slack
SellerCenter - Store-oriented analytical tool
Seoxan - check seo report for any website, alexa ranking, server information, meta tags, authority, page speed and more
MerchantSpring - Multi-channel analytics for Amazon, Walmart, eBay & Shopify