OscAddons.com offers all kind of support for OsCommerce and Phoenix online stores.
You will find add-ons which add functionality and features to your store and which are compatible with CE Phoenix and 2.3.4.1 FROZEN CE Responsive Bootstrap version.
At your disposal there are completely free add-ons which you can also find on the official OsCommerce website, and a selection of commercial Add-Ons with very affordable prices and exclusive on this WEB.
On the other hand you can count with installation and programming services at very competitive prices.