File Juicer
File Juicer for macOS
Overview of Formats

Search & Extract

Images

jpg jpeg 2000 gif png pdf wmf emf tiff eps pict bmp

Video

mov mpeg avi wmv

Sound

mp3 wav System 7 au aiff

Text

ascii rtf html

From:

avi cab cache chm dmg doc emlx exe ithmb m4p mht mp3 pdf pps ppt raw swf wps xls zip and other formats

AC 3D file format

Is a 3d file format based on plain text files.
You can get a Mac version of AC3D here: https://www.inivis.com

The RGB textures commonly used with AC3D can be converted with Graphics Converter.