Client-side web apps. With today's smartphones, it does make sense to not do everything solely on the server side. Theretically, cross platform support would b

Client-side web apps. With today's smartphones, it does make sense to not do everything solely on the server side. Theretically, cross platform support would be another possibility. But one could argue native C code could be bundled as well, albeit with separate integration being needed. (Android and iOS do support such extensions).