WP-Invoice lets you create and send web-invoices and setup recurring billing for your clients.
WordPress personal user profile. Login form and registration, edit profile, private messages, reviews, rating system, form of publication, and more.
The plugin allows to sell digital content and accept payments via PayPal, Payza or InterKassa. It delivers download link after completed payment.
AVK-Shop allows you in automatic mode to sell of items from your website.