One Month HTML - Learn HTML in 30 days
Analyzify - Google tag manager and analytics app for your Shopify store
Grav - The modern open source flat-file CMS
Shopgram - A free analyzing tool for exploring top Shopify stores
Elementor - Elementor is a front-end drag & drop page builder for WordPress.
MerchantSpring - Multi-channel analytics for Amazon, Walmart, eBay & Shopify