JooCart,jCart is released for OpenCart 2.2.0.0 with new features and previous bug fixes.

New Features:

Improved Code
Faster Loading
More compatible with Joomla Templates
OpenCart 2.2.0.0 inside

Bug Fixes :

compatible issue with mootools-more.js files
CSS issues with some joomla modules

And bug fixes from OpenCart Team https://github.com/opencart/opencart/blob/master/changelog.md