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What are AS3PROJ files and how to open them

Are you having problems opening an AS3PROJ file or are you simply curious about its contents? We're here to explain the properties of these files and provide you with software that can open or handle your AS3PROJ files.

What is an AS3PROJ file?

An .AS3PROJ file is a FlashDevelop ActionScript 3 Project file.

We have not yet analyzed in detail what these files contain and what they are used for. We're working on it.

How to open AS3PROJ files

Important: Different programs may use files with the AS3PROJ file extension for different purposes, so unless you are sure which format your AS3PROJ file is, you may need to try a few different programs.

While we have not verified the apps ourselves yet, our users have suggested seven different AS3PROJ openers which you will find listed below.

Last updated: February 4, 2014

Various apps that use files with this extension

These apps are known to open certain types of AS3PROJ files. Remember, different programs may use AS3PROJ files for different purposes, so you may need to try out a few of them to be able to open your specific file.

Help us help others

File.org helps thousands of users every day, and we would love to hear from you if you have additional information about AS3PROJ file formats, example files, or compatible programs. Please use the links below or email us at submit@file.org to discuss further.