FlashDevelop

Spec sheet

What it does

FlashDevelop is a free, open-source code editor with support for ActionScript 2 and 3, Haxe, and web development.Read 8 Oct 2026 · flashdevelop.org

Supported platforms

windowsRead 21 Sep 2026 · github.com

Free plan

YesRead 21 Sep 2026 · github.com

Support

The project directs users to community forums for questions and help, and to GitHub for issues and pull requests.Read 8 Oct 2026 · flashdevelop.org

Founded

2005Read 28 Sep 2026 · flashdevelop.org

Built-in debugger

YesRead 21 Sep 2026 · github.com

Bundled toolchains

The latest stable download includes ActionScript and Haxe toolchains, and the downloads page lists MTASC, Haxe, Flex SDK, and AIR SDK integration.Read 8 Oct 2026 · flashdevelop.org

Code assistance

It provides code completion and generation, including generating getters, setters, event handlers, delegates, and documentation.Read 8 Oct 2026 · flashdevelop.org

Debugging

Its debugging features include breakpoints, stepping through code, and inspecting locals and the call stack.Read 8 Oct 2026 · flashdevelop.org

Editor type

desktopRead 21 Sep 2026 · github.com

Extensibility

FlashDevelop supports third-party plugins and custom plugins written in C#.Read 8 Oct 2026 · flashdevelop.org

Extension support

YesRead 21 Sep 2026 · github.com

File exploration

It can inspect compiled SWF and SWC files, browse their classes and assets, and reference libraries from a project.Read 8 Oct 2026 · flashdevelop.org

Other operating systems

The project’s GitHub page says Mac OS X and Linux can run it using virtualization software or Wine/CrossOver, and mentions a native Qt helper for those systems.Read 8 Oct 2026 · github.com

Platform requirements

The downloads page lists Windows 7, 8, 10, or 11 and .NET Framework 2.0–4.x as system requirements.Read 8 Oct 2026 · flashdevelop.org

Project history

FlashDevelop says it was created in 2005 by Flash developers and is maintained by community contributors.Read 8 Oct 2026 · flashdevelop.org

Projects and builds

It supports compiling ActionScript, Haxe, Flex, AIR, and generic projects, with project templates and one-click compile and test.Read 8 Oct 2026 · flashdevelop.org

Web development

For web development, it offers HTML, CSS, JavaScript, PHP, and XML editing, plus HTML zen-coding and source-control support for SVN, Git, and Mercurial.Read 8 Oct 2026 · flashdevelop.org

Plans and prices

Every FlashDevelop plan and price →

Where Specifiction places it

• Integrated Development Environments#21 of 658.2
• Code editors#34 of 457.8