They ARE Eco Card.
When EcoCard left the U.S.A. they set up a subsidiary called QuickTender, which is code-named UseMyWallet on sites that accept that service. It's like Western Union or MoneyGram are called other names in the cashiering section of many gambling sites. However, the thing you have to remember about QuickTender/UseMyWallet it's an invitation only type processor. You get invited by having used EcoCard in the past or by being a previously depositing member at a book that will take them (like Carib for example). Make a deposit at Carib via other means and you'll get an e-mail invite from QuickTender to join.
To answer the other part of your question. I believe the entire
Jazette family of books does use that processing solution, and I believe
Carib also uses it sir.