Opencart for sure, way better then prestashop or Zencart. Those other 2 are basic and no one responds to any problems you might have.
Opencart is a beautiful looking cart. Has many similarities to Intersp1re as well as some to Magento. But I think its probably way faster than Magento.
MAGENTO IS SOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOO SLOW - i would not recommend it unless you know how to hack servers and have your super fast dedicated server... otherwise go for something else.
I want to say I have interspire and so far I'm happy with it, it has a good backend panel it's easy to get around. Reminds me a little bit of prestashop.. for some reason though I like prestas shop front end a bit better out of the box.
open cart is best than Os-commerce.Best E-Commerce Shopping Cart? I prefer VirtueMart because it's for Joomla and RokQuickCart is a simple shopping cart for Joomla. It takes a simple, yet elegant.
I love opencart. After trying many different ones, for a person who just want s ease of use, opencart is great. That's for free ones.
I think the problem with osCommerce is a bunch of templates, plugins, etc written by different people. Sort of a mess. Try Magento. They're relatively new in this sphere and seems having promising start.
My vote is opencart for sure. While oscommerce does have a huge user base of followers, the code itself is sloppy and far outdated. Stick with something made more recently and properly maintained instead of something you may spend years "optimizing"
Out of the 2 I would highly recommend OpenCart - Userfriendly, absolutely. Obviously there's other great solutions such as Magento but that takes some getting used to and it is not as user friendly as OpenCart. Magento should be more for the advanced users. ZenCart is good but have you had a look at the backend? - If you know what you are doing you can customise the whole system to make it more visually appealing and user friendly but going back to the question.. OpenCart vs. osCommerce - I'd recommend OpenCart for the more 'simpler' option.
I would recommend our shopping cart - TomatoCart. It's branched from osCommerce 3 and the admin panel has been rewritten with ExtJS. The desktop-like admin panel make it the most easy-to-use shopping cart in the market.
opencart is by far better of the two, i used them both and oscommerce is harder to use than opencart. also the oscomemrce team is lazy and never release new versions but if you look at opencart they release alot of them and it's much easier to use