FlashDevelop has first-class support for Haxe development, the open source toolkit based on a modern programming language and cross-platform library. It's quite useful for game development due to its rapid compile and run times, as well as its great debugging functionality with FlashDevelop.

One tool that helps the development of Adobe Flash websites, web applications, desktop applications and video games.

I have been using for pretty much my whole career in developing and coding FlashDevelop. Things that I like about FlashDevelop is that it's very easy to get used to, especially if you are new to coding. It's a free application so it's a good alternative for businesses who can not afford the money for other programs that cost money. Granted, those programs are probably better but FlashDevelop works just fine and is something that I would recommend to a lot of people. It's UI is clean and nice so it will help with people who need to have an organized application or workstation. All my employees that have used FlashDeveloped have made huge progress on their projects and get them done much faster than usual. FlashDevelop also has great support for ActionScript and Haxe development. It's a very good application to generate code and compile it as well as debugging code.FlashDevelop can also be used for web development and it is all open source.