Editors and IDEs

FlashDevelop

Flash Develop screenshot

Platform
Windows
License
Open Source
Links

Sublime Text

Sublime Text screenshot demonstrating Haxe auto-completion

Platform
Windows, Mac, Linux
License
Commercial
Links

IntelliJ IDEA

IntelliJ IDEA screenshot

Platform
Windows, Mac, Linux
License
Commercial ("Ultimate" edition) / Apache License 2.0 ("Community" EAP edition)
Links

VIM (With Vaxe Plugin)

VIM with Vaxe screenshot demonstrating Lime build options.

Platform
Linux, Mac
License
Open Source
Links

HIDE (Haxe IDE, work in progress)

HIDE screenshot

Platform
Windows, Linux, Mac
License
Open Source (MIT)
Links

Other Editors, IDEs and plugins

For a complete list of IDEs, editors and plugins, see the Haxe IDEs and Editors list on the old wiki.

This list will eventually be updated and migrated here.