Templately is described as 'Ultimate Templates Cloud for WordPress to take your favorite Page Builders to a whole new level & manage all your designs in one place with Templately' and is an app in the Development category. There are four alternatives to Templately for Online / Web-based, iPad and iPhone. The best alternative is CodeCanyon. It's not free, so if you're looking for a free alternative, you could try Code.Market or VeryUtils.
Code.market is a community & marketplace for programmers and designers who publish their products and earn more on the site than on a regular job. Main categories are: Flutter Template Marketplace & React Native Template Marketplace.
VeryUtils is a Digital Products Trading Platform that sells Digital Products, Digital Downloads and Subscriptions Online. VeryUtils sells software, web applications, source codes, scripts, 3d printing templates, ebooks, etc. elements.