Total Shop UK eCommerce is an eCommerce site based on CodeIgniter. It is search engine optimized (SEO), uses AJAX functionality, and has multiple categories/sub-categories, an easily customisable design, percentage discount codes, account history and order tracking, customer newsletters, content managed pages, and the ability to set the Global VAT rate.
RainFramework is an MVC Framework for PHP. It's easy to use and it enables teams to work better. It is installable with a simple copy/paste operation. It has a very small footprint, with just the necessary library and files. It is well documented and tested, and it allows you to create Web applications more quickly. It also supports multiple languages, has a WYSIWYG editor, and is extensible.