Sublime Text 2 is a cross-platform text editor and IDE with features similar to TextMate.
It's commercial but you can evaluate it full featured for free.

The Haxe Sublime Text 2 bundle enables:
- Haxe compiler code completion and hints
- syntax highlighting and basic completion for hx, hxml, hss and nmml files
- Sublime build system integration
- hxml parsing, automatic creation, and multiple build management (ctrl+shift+b)
- supports NME projects (nmml)

Installation

Links