Comment Squeak (Score 1) 296
If you really want cross platform and variable display resolution, look at Squeak Smalltalk, an open source implementation of Smalltalk that is the balm and can, in fact, run cross platform on any device for which a c compilier is available. There are several forks, one of which, Pharo, is targeted at commercial developers.
"Major computing platforms supported include most versions of Windows including CE/PocketPC, MacOS, Linux/Unix, OS/2 Warp, Acorn RiscOS, and even a bare chip (the Mitsubishi M32R/D)."