Bitcoin-Wordpress-Plugin

GoUrl Official Bitcoin Payment Gateway for Wordpress 3.5+ (or higher). Sell Products, Files, Digital Downloads, Membership on your website. Accept Bitcoin, Litecoin, Dogecoin, Darkcoin, Reddcoin, etc Payments Online. Use Pay-Per-Download, Pay-Per-Product, Pay-Per-Membership, Pay-Per-Page/Video-Access on your website. It is Easy!. Maintained by cryptoapi on GitHub, where it has earned 74 stars from the community.

It's actively developed around bitcoin, bitcoin-gateway, bitcoin-payment, and is a solid reference for anyone building with these tools.