I am having trouble with PayPal (which will hopefully be resolved by the end of the week or I'm going to have serious cash flow issues and not be able to work because my assets will be repossessed). I decided that, in light of that, I should see what alternatives are available, since I don't know many that aren't crypto-based and some of my customers still pay in fiat. Here's what I've found that jogged my memory or was new to me:

• Wise: Lower costs than PayPal (and faster, too). Hold money in one of twenty-eight currencies, for twenty-eight countries.
• Revolut: A feature-packed means of sending and receiving money, with the option of an associated credit card. It can also be used to buy crypto.
• Payoneer: A global payments system for businesses. Supports 150 countries' major currencies (including CAD, EUR, GBP and USD).
• CCBill: Touted as not just a payment processor, but an E-commerce platform. Has been around since 1998. Offers Website integration (including for sites hosting adult/mature content).
• Skrill: Make fast, secure, international payments cheaply. Allows exchanging money for crypto. Supports 40 of the major currencies of 180 countries. Money can be sent to other Skrill members or bank accounts.

There are more PayPal alternatives listed on alternativeto.net, but I am not familiar with them, the "about" pages don't provide much information or the reviews (if they exist) are rather short. Also, I'm short of time, so can't investigate every option. I think the five listed above are a good starting point for further investigation.

If you're wondering why Stripe isn't on this list, here, have a link.