I've just switched from Windows to Mac and need to find a few tools to replace those that were Windows-only. I'm most familiar with FlashDevelop, which I've used for years, but it is Windows only. SEPY seems to have been abandoned, FlashIDE's editor seems weak, and I don't want to purchase FDT or FlexBuilder right now.
I would like an editor that is as good as FlashDevelop at auto-completion and syntax highlight for AS3 and MXML, is highly customizable, and can thus be configured to call external scripts and applications, such as ant, javac, mxmlc, and python with a custom button or hotkey. Also, it would be great if it is lightweight and isn't too pushy about using it's own project folder/management like Eclipse/FlexBuilder/FDT. I often only need to build a single AS3 file or MXML file and don't like the project setup time or having my own folders littered with project metadata files.
Can you recommend a couple of really good AS3 and MXML editors for Mac?