Online payment system using the 'virtual cash' principle. Transactions are instantaneous and are not delayed by slow bank-to-bank communications. PayPal now also accepts credit card payments.
E-gold is an electronic currency and online payment system based on real gold. All the 'virtual' gold is 100% backed by real gold in physical storage. E-gold enables people to spend specified weights of gold to other e-gold accounts. Only the ownership changes - the gold in the treasury grade vault stays put.
GreenZap Online virtual cash system based in Australia.
WebMoney Online virtual cash system based in Russia.