Just wanted to let you guys know that I am open sourcing a number of e-commerce plugins that were commissioned but never got the sufficient funding to be finished. They work for the most part, but will probably require some more work for notifications and such to work. Plus there is a million add-ons that can be built, i.e. shipping calculator, shipment status, digital products etc. I am not going to put any more time into maintaining it without a project willing to pay for my time.

I have attempted to build an extendable interface, everything works through hooks. It's possible to add additional async/sync payment modules. It's easy to add various taxes, charges, coupons etc.

https://github.com/hypeJunction/Elgg-payments - Interface for storing transaction information, multi-currency operations et.

https://github.com/hypeJunction/Elgg-cart - Cart UI, supports multiple merchants within the same cart, supports multiple currencies within carts

https://github.com/hypeJunction/Elgg-shops - UI for creating shops, users can create multiple shops

https://github.com/hypeJunction/Elgg-products - UI for adding products. Meant to work with shops plugin, but can work with other implementations of the Merchant interface

https://github.com/hypeJunction/Elgg-payments_paypal - PayPal adaptive payments for Payments plugin. Can be used for collection payments for anything. See ads plugin

https://github.com/hypeJunction/Elgg-cart_paypal - PayPal extension for the cart

https://github.com/hypeJunction/Elgg-shops_paypal - PayPal extension for shops

https://github.com/hypeJunction/Elgg-ads - Allows users to create ad campaigns and add budget on need basis. Falls back to Google Adsense.