Gotta give more details dude. Put some time in your posts and give more information.

Website could be HTML, could be wordpress, could be? Products could be digital or physical.

Your not telling us much. Since you mentioned plugin, so I can guess your talking about wordpress.

For wordpress, woocommerce is good for digital and physical products.

No problem.

As I said, I use Woocommerce for digital products and love it. Of course it can do physical as well.

Only wordpress plug-in that I can think of that is worth looking at for digital and physical. Unless some one else has a suggestion.

Hello. As other friend said in previous replies, the best of the best is woocommerce. But I suggest to use s2member plugin for an additional option. Using it you can provide sign up, login and log out, affiliate program and etc. It adds more functionality to your site and it's free.

Don't forget to click thank button ;-)

S2member is a membership plug-in, it is not a shopping cart plug in. Unless I misunderstood, the OP wants a shopping cart plugin. Woocommerce has accounts, sign-in, ect. S2 is only going to offer more functionality if he wants a membership site. Two different plugins.