Add-ons, or modules as we like to call them, are pre-built features and functionality "modules" that we can plug-in to almost all of our sites, template powered or bespoke.
An add-on starts as an idea we have or a feature request made by a client. We take that idea and develop it in our own time, eventually ending up here and made available to everyone.
It's very likely that if you want a certain feature on your website we've already got a module that will do it.
The downside to this approach is the module might not be unique to your site. The upside is we develop the idea in our own time, there is no R&D cost to you, so the only costs involved (if any) is integrating the module to your site.
Use the additional menu bar that is just below the main site menu at the top of the page to view all our most popular available add-ons.
Don't forget to also have a look around our template demo sites to see these add-ons, and many others, in use on live demo sites.