Analyzify - Google tag manager and analytics app for your Shopify store
Pusher Beams - Send push notifications programmatically at scale
Retainful - Automate Email Marketing & Increase eCommerce Sales Automate your email campaigns in minutes - recover abandoned carts, drive repeat purchases with next order coupons, win-back inactive customers, send order follow-ups, and thank you emails.
Mentioned By - Learn when your site is mentioned by other sites for free
Now Push Notify - iOS does not support browser notifications today, but Now Push Notify makes this possible.
Spotify Notifications - Bridging Spotify and OS X Notification Center