Shopify Upsell Bundles App - Shopify app to Create Bundles, Packages and Sets with discounts by the most simple and efficient...
Indie Hackers - Connect with fellow entrepreneurs, developers, and bootstrappers who are sharing the strategies and revenue numbers behind their companies.
ReConvert - Page builder to design thank you page that cross sell & upsell
PipeCandy Insights Platform - 50+ business insights about eCommerce companies that matter!
Shop'fy Stash - Curated list of tools to help build your Shopify Business
Makerbase - Like a user-editable IMDB for product makers