Which e-commerce systems accept bitcoin payments?

Can you provide a comprehensive list of e-commerce systems that currently accept Bitcoin payments? Are there any major marketplaces or platforms that have integrated this form of digital currency into their transaction systems? I'm interested in knowing if it's becoming a more widespread method of payment and which online merchants are embracing it. Additionally, do these systems have any limitations or fees associated with using bitcoin for payments? It would be helpful to have a detailed breakdown of the e-commerce platforms that accept this cryptocurrency.