The fastest way to accept payments through your site, using Stripe Checkout

Add-on Approved: Payments with Stripe

Add-on Approved: C5R Yandex Update Constructor
Notification about outdated or unsupported browser

Add-on Approved: Ajax for Express Forms - Pro Edition
Add-in to the Light Edition. Now you can customize settings & behavior for individual Express forms.

Add-on Approved: Automatic Sign Ins
Automatically sign in users in by IP address, referrer URL or by visiting a page