Python - Python is a clear and powerful object-oriented programming language, comparable to Perl, Ruby, Scheme, or Java.
JPEXS Free Flash Decompiler - JPEXS Free Flash Decompiler (FFDec) is an opensource Shockwave Flash (SWF) decompiler.
Rust - A safe, concurrent, practical language
Flash Decompiler Trillix - SWF Decompiler Trillix allows you to decompile SWF (Flash), convert SWF to FLA, extract SWF elements and edit SWF file. Supports AS 3.0, Flash CS6 & CC and Flex.
Java - A concurrent, class-based, object-oriented, language specifically designed to have as few implementation dependencies as possible
SWFTOOLS - SWFTools is a collection of utilities for working with Adobe Flash files (SWF files).