Post by Peter Cooper on June 29th, 2006
PayPal Libraries for Ruby and Rails

- MySQLPlus: A Non-Blocking MySQL Driver for Ruby 1.8 and 1.9
- Rails Inside: The Rails-Only Alternative to Ruby Inside
- Win $100 By Blogging About Ruby or Rails This Week!


I initially thought there was only one PayPal library for Ruby, but apparently not. Here's all those I've found:
Paypal by Tobias Luetke - Primarily developed to help integrate PayPal with Rails applications. It works with PayPal's IPNs (Instant Payment Notifications). Source code demonstrations included.
VPayPal - A new library (released February 2006) that supports both Express Checkout API and the direct checkout API.
RoR::PayPal - A library developed by ELC Technologies and made available under the LGPL. It doesn't seem to support the Express Checkout API but presents another option and has a detailed README.
Testing PayPal Web Services with Ruby soap4r - This isn't a library but Pranav Bihari looks at the internals of talking between Ruby and PayPal. This could be useful for developing your own library.

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