mailcow - An open source mailserver suite.
OpenCart - A free shopping cart system. OpenCart is an open source PHP-based online e-commerce solution.s
Mail-in-a-box - Mail-in-a-Box provides webmail and an IMAP/SMTP server for use with mobile devices and desktop mail software and also includes contacts and calendar synchronization.
WooCommerce - A freely available eCommerce plugin that enables shop facilities on your WordPress website. Functionality enabling extensions & beautiful themes available.
Mailu - Mailu is a simple yet full-featured mail server as a set of Docker images.
PrestaShop - Create your online store with PrestaShop's free shopping cart software. Build an ecommerce website for free and start selling online with hundreds of powerful features.