• Using haXe with Flash9
• AS2 << >> haxe/flash comparison
• haXe AS3 Code Generator
• Using AsWing/as3 with Haxe
• Flash/Neko Chat Example
• Using Flex with haXe
• Summary of Flash Security

The whole Flash APIs which are accessible from haXe are documented on the Adobe website :

• Learning and AS2 Reference (for Flash 6-8)
• AS3 Reference (for Flash 9)