Free and good working plugins for receiving micro donations on your WordPress site.
Easily add Flattr donation buttons in your WordPress blog and its blog posts.
Easy, simple setup for adding a PayPal Donation button either as a sidebar Widget or inside content using a shortcode.
Adds Dwolla’s payment button helper script to your site’s tag. By doing so, it enables you to easily embed Dwolla payment buttons throughout your site.
MuCash is micropayments made simple. In just a few clicks your readers can buy articles, download files, make donations, and more.