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FlashDevelop offers first class support for ActionScript (2 & 3) and HaXe development. Great completion & code generation, projects compilation & debugging, plenty of project templates, SWF/SWC exploration etc. FlashDevelop is also a great web developer IDE with source-control support (svn, git, mercurial), tasks/todo, snippets, XML/HTML completion and zen-coding for HTML.

FlashDevelop is an open source story; it was created in 2005 by passionate Flash developers, for Flash developers. It is the product of many contributors which created what is today the best open source Flash development environment. We've received numerous features, bug fixes, feature ideas and even full plugins from community members and it just gets bigger. Be part of this great community and help us in whatever way you can. Open C# Express and code features, send us bug fixes, help us improve the documentation, donate or just spread the word.