Appcelerator is described as 'The Appcelerator platform is everything you need to create great, native mobile apps—all from a single JavaScript code base' and is an app in the development category. There are more than 50 alternatives to Appcelerator for a variety of platforms, including Web-based, Windows, Mac, Linux and Android apps. The best Appcelerator alternative is Microsoft Visual Studio. It's not free, so if you're looking for a free alternative, you could try Microsoft Visual Studio or Apache NetBeans. Other great apps like Appcelerator are Unity, Qt, Supabase and Qt Creator.