Does anyone know what plugin Automattic uses for their eCommerce functionality in the MU installation of WordPress located on the free sub-domains at wordpress.com?

Please share where it is available, or if it even is available. I suspect that it might be proprietary, but if not, I like to try and follow Automattics lead when developing my own WP sites to ensure better long-term stability.

More Plugin Details

If you have a wordpress.com account, you'll find the admin panel for the plugin here: {YOUR_USER_NAME}.wordpress.com/wp-admin/paid-upgrades.php. These two related resources are pulled from the wordpress.com source code:

  1. /wp-admin/css/store-bundles.css

  2. /wp-content/admin-plugins/wpcom-billing/images/WPCOM-Billing-Paypal-Direct.png

There are also multiple references to the plugin in this .pot file... open the link in your browser and do an on-page find for: wpcom-billing.

Based on the above evidence, it appears that this eCommerce plugin resides in a directory called: wp-content/admin-plugins/wpcom-billing, but I'm also wondering if this could just be a modified version of the wp-ecommerce plugin.

1 Answer 1


According to Dion Hulse of Automattic:

100% custom, most ecommerce plugins of the time (many years ago) were not suitable for the use, its not opensource either

  • Appreciate the detective work... maybe they will open source it one day, but I know how expensive e-commerce development can be and wouldn't blame the Automattic if they considered it part of their competitive advantage.
    – joelhaus
    Oct 22, 2012 at 20:18

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