I want to develop something like this:

http://odoo-magento-connector.com/

a. If there is anything similar please post.

b. I'm looking for documentation that will tell me how to integrate other providers like Tranzila or EasyCard (see below)

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My question was: I see mobile and paypal and other types of payments but not credit cards.

But what if I want the credit cards in Israel which all work through Shva to the best of my understanding.

http://www.shva.co.il/?catid={9A9E152F-706B-49DB-84B6-D4A8E795D069}

Translation: For clearing with one of the credit card companies call : Isracard , K.A.L or LeumiCard

For clearing with one of the credit card companies call : Isracard , K.A.L or LeumiCard

In addition you must purchase a clearing terminal (hardware) from one of the following suppliersVeriphone, Kaspit, EEC Veriphone, Kaspit, EEC Eraltech (Casio), Matrix

There are companies that develop solutions specific for different types of enterprises.

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Easycard - http://www.e-c.co.il/

Transila - http://www.tranzila.com/

If you want to develop a new module for a new payment acquirer such as Shva or other, you could study the existing modules to get directions. See https://apps.openerp.com/apps/online/payment/ and https://apps.openerp.com/apps/modules/9.0/payment_ogone/ for example.