Martin Fowler’s slides on cross-mobile platform development here: http://martinfowler.com/articles/multiMobile/
C++
http://blog.burhum.com/post/36166554007/cross-platform-ios-android-mobile-app-development
UI options:
http://www.dodgycoder.net/2012/01/modern-cross-platform-development.html
c++ on the web:
http://de.slideshare.net/andreweissflog3/quovadis2013-cpp-ontheweb
Mixed one:
http://www.geekwire.com/2012/apps-cross-platform/
∫ ∪ ∧∴ ∋ ∈ ⊇ ∧ 