Lost in Support: VariCAD

VariCAD is a general purpose 2D/3D Mechanical CAD. It already has a native Linux port for many years and it's  very popular between Linux users.

Lost in Support: QCAD pro

QCAD pro is a 2D CAD program that has Linux support for years. Its relevance for Linux users is very high since not only it had long been the unique reliable 2D CAD solution but also its GPL Community Edition is the base for LibreCAD.
QCAD pro comes in its latest version 3 with significant new functionality added, such as .dwg support, new script engine, .svg support and more.

Lost in Support: DraftSight

DraftSight, the free 2D dwg-based solution by Dassault Systemes, is an interesting choice for everybody.

Lost in Support: BricsCAD

BricsCAD is a unique piece of software. It tries to be a full .dwg-based solution with some exciting features like direct modeling, 2D/3D parametric constraints, etc. So it is unfair to describe it as an AutoCAD-clone. BricsCAD has a native Linux version since September 2010 and it comes in 3 different versions: Classic, Pro and Platinum.

Lost in Support: ARES CE

ARES CE is one of the available dwg-based AutoCAD-like programs for Linux.
It's a commercial application that costs  795 € and has a Linux version since October 2010.

Lost in Support: export SUPPORTED_ENVIRONMENT=?

After finishing with the OpenSource applications, I am going to continue my Lost In Support series with the proprietary CAD programs. For better results I believe that a new "variable" is needed. Which flavor of Linux does the proprietary app support officialy?
For OpenSource applications supporting every kind of Linux distros, it isn't difficult. At least, the source code is available for compiling so you can install the application in every distro.
Proprietary apps behave very differently. The CAD vendors choose what kind of distro(s) they want to support. This choice affects the overall Linux support experience.
So here it is: export SUPPORTED_ENVIRONMENT= ?

Lost in Support:LibreCAD

LibreCAD is an important piece of software for the OpenSource community. Currently it is the only available and mature OpenSource solution for 2D CAD.
Let's see what happens with its Linux Support.

Lost in support:FreeCAD

FreeCAD is a perfect example of a well-supported application under Linux. Also its active community provides excellent documentation and support with lots of tutorials, answers and helpful advices all accessible with a few clicks from the application's homepage.

Lost in Support:Intro

The latest DraftSight V1R2 release was a disaster. Despite the localization bug this version also has some very annoying problems such as the crash when there is no Internet connection available. These problems gave me the idea for a series of articles that will evaluate, compare and rate the support level of the available Linux CAD applications.

Things to compare:
Installation/Installation Instructions
Active Bugs/Bug Fixes
Linux-related answers
Help/Command Reference
Development/Improvements/New features

Applications:
FreeCAD
LibreCAD
ARES CE
Bricscad
DraftSight
QCAD Pro
VariCAD

So how easy is for a Linux newbie and non experienced user to deal with these applications with only help the resources that the CAD vendors/developers provide?