Everyone knows who PayPal is.  Do you know who competes against PayPal (and I use this term very loosely, since they dominate the market)? I did a search just a few minutes to see who's in business still, and which ones have gone by the wayside. It's a volatile market - very few companies that start up in that space are reputable, or if they are they aren't well funded enough to stay in business until they gain traction.