Flash is good... Flash is hell

I keep finding so many Adobe Flash based resources!

Flash is so pretty and easy. Problem is is depends on so many factors! Sometimes behind my firewall it works, other times I get a bit of the app, mostly I get evil filtered icon.

Flash is not open, adobe keep the source code very secret. There are better methods for creating content, but we all follow the flash route (yes I am guilty, just look at my class blog).

Does anyone know of decent open source alternatives that work?