OpenCart
WooCommerce
PrestaShop
Shopify
Magento
Thirty Bees
BigCommerce
Jumpseller
HTTPS Everywhere
Smart HTTPS
SSL Enforcer
HTTPZ
The Tor Browser
HTTPS Only
HTTPS Always
Tor Browser
OpenCart
HTTPS EverywhereWooCommerce - A freely available eCommerce plugin that enables shop facilities on your WordPress website. Functionality enabling extensions & beautiful themes available.
Smart HTTPS - Automatically changes HTTP addresses to the secure HTTPS, and if loading encounters error, reverts...
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.
SSL Enforcer - SSL Enforcer - Force SSL/TLS encryption for any browser or app. Block all unsecure connections.
Shopify - Shopify is a powerful ecommerce platform that includes everything you need to create an online store and sell online. Try it free for 14 days.
HTTPZ - HTTPZ is meant to be unobtrusive and lightweight.