Editing Blender

'''Blender''' is the free and open-source 3D creation suite. It supports the entirety of the 3D pipeline—modeling, rigging, animation, simulation, rendering, compositing and motion tracking, and even video editing and game creation. Through user plugins, it supports older game model formats such as Quake & Hexen2's *.MDL, Quake 2's *.MD2, Quake 3's *.MD3, and Quake 4's *.MD5.
[https://www.blender.org/ Blender's website]
== Add-ons ==
Here are some addon adding support for the following formats.<br><br>
'''.mdl''' : classic vertex animated format.

*[https://bitbucket.org/khreathor/mdl-for-blender/wiki/Home Khreathor's mdl Blender addon based on Bill Currie's outdated quake forge version for Quake / hexen2]

'''.md2''' : The mdl format used in quake2.

*[https://github.com/Paril/mdl-md2-md3-for-blender Parli's mdl-md2-md3 addon for Blender based on Khreathor's]

'''.md3''' : A more precise mdl used in quake3.

*[https://github.com/Paril/mdl-md2-md3-for-blender Parli's mdl-md2-md3 addon for Blender based on Khreathor's]

'''.md5''' : Used in doom3 & Quake Rerelease.

*[https://github.com/KozGit/Blender-2.8-MD5-import-export-addon MD5 Importer/Exporter for Blender 2.80 thru Blender 3.1.2]

'''.iqm''' : opensource skeletal format.

*[http://sauerbraten.org/iqm/ iqm devkit]

== Tutorials / Help ==
Fairweather has a YouTube channel series: [https://www.youtube.com/playlist?list=PL4S6Q9G0D-9sxyG0IISLG-6R05yd0SSZp Modeling for Quake] that covers many of the aspects of working with Blender for Quake modeling.