As the usage of Internet for business transactions increases, we now have dozens of online payment service providers, of which are specific to a country and some are global. This wikipedia page has a comprehensive list:
PayPal is the undisputed leader in online payment service providers. Google has tried to build market share for its Google Checkout over the last two years but feedback from my customers and business partners is that Google Checkout is still not their preferred online payment mechanism.
Most other online payment service providers are limited in their appeal, and are used by specific niches of customers. For example, there are some payment providers for online pharmacy transactions and online betting transactions. These are large industries however as the legalities are not the same or favorable in all countries, therefore such payment providers are able to offer a solution that is needed by the companies in these industries. Continue reading