Paperform - A digital Swiss Army Knife for Small Businesses
OpenCart - A free shopping cart system. OpenCart is an open source PHP-based online e-commerce solution.s
Maian Music - Free Responsive PHP MP3 Music Store
EvenCart - EvenCart is an open source hybrid/headless eCommerce software built on top of ASP.NET Core and Shopify Liquid.
WooCommerce - A freely available eCommerce plugin that enables shop facilities on your WordPress website. Functionality enabling extensions & beautiful themes available.
Google Forms - Simple web forms from Google.