Uphold is one of the most popular platforms for paying online and is a viable alternative when dealing with multiple currencies and assets, as well as switching between different types of exchanges.
It makes use of blockchain technology to ensure the best possible lending of its service, which can be held, bought, sold, and paid for using a variety of assets, both physical and digital, and with quick delivery. It allows users to trade using its platform, which features a user-friendly design and a straightforward registration process.
It runs on a variety of operating systems, but some browsers do not support it; yet, with all of the functionality it provides, I see it as a bridge between fiat money and cryptocurrencies.