Use the number of rows in Gravity Forms list fields for calculations and prices.
WordPress plugins
Gravity Forms Windcave Pro
Create online payment forms with Gravity Forms and Windcave.
Inspect Gravity Forms
Gravity Forms add-on for some extra info in the forms list.
Log Emails
Log emails to the database, to better diagnose email problems.
Lurking Minicart for WooCommerce
a WooCommerce minicart that lurks around the edge of your website, in menus, and widgets.
Minimum Age for WooCommerce
Add a checkout question for the customer’s date of birth, and enforce a minimum age.
NextGEN Download Gallery
Add a template to NextGEN Gallery that provides multiple-file downloads for trade/media galleries.
Order Form for WooCommerce
Add simple order forms to your WooCommerce shop.
Pay Now Button for eWAY
Start accepting payments online quickly with WordPress and an eWAY Pay Now button.
SSL Insecure Content Fixer
Fix some common problems with insecure content on WordPress pages using SSL.