HI There, Its brilliant software. I only use 2 carts and they are Viart and Avactis. Both are different and one has more features than the other. Personally I keep away from anything that is open source because these systems are plain and raw compared to something like Avactis. For a basic website setup Avactis rocks. Check out this website for example which uses Avactis - http://wolfgear.com.au If you are setting up a basic website selling a particular line of products Avactis will do nicely. If you need to add different shipping prices to different countries and need the flexability of this like if this customer is from this country charge this and so on Viart is the better option. An example is an automotive spare parts website where it has a ton of items that weigh all different weights. Avactis is brilliant and your choice would be wise. Joe