Use a third-party CSS or JS Framework, a self-hosted service like a CRM, or a third-party service with the site.
This tiny module adds some javascript magic to webforms that allows to avoid duplicate submissions (when youser clicks Submit button 2 or more times).
A Flexmail API integration.
Allows you to render embedded Issuu viewers.
Stock Photo field creates a simple field type that allows you download a local copy of an image simply by entering the stock photography image's url.