Some of the tools listed here have alpha/beta status, but be warned, they will reach full release before Tsuka.
- FlashDevelop 3
- Flex 3 SDK
- µSprite AS3 vector editor
- Inkscape vector editor
- As3 Crypto Framework with TLS support
- Will to perform and succeed
The list will most probably become longer when all possible Actionscript 3 libraries are listed.