====== Five Top Free CAD Packages ======


From: https://www.thoughtco.com/top-free-cad-packages-485330

<code>
AutoCad
Trimble SketchUP
DraftSight
FreeCad
LibreCad
</code>

====== Pcon Planner ======

From <https://pcon-planner.com/en/3d-room-planner/> 


Draw 3D Room Plans
Instantly create detailed, 3-dimensional floor plans. Regardless of whether you’re starting from scratch or loading an existing plan, simply and quickly edit and share with others







====== CADE ======

From: http://www.weresc.com/cade.php

<code>
CADE is a compact but powerful 2D vector editor for Windows. It includes basic Visio functionality 
and could be used to create diagrams, network diagrams, flowcharts, schemas, maps and so much 
more. You can use predefined blocks, primitive shapes, raster and vector images. The collection 
of blocks and it's attributes could be modified and extended. Working in CADE requires no 
particular drawing skills.
</code>

====== Qcad ======

From: https://qcad.org/en/

<code>
The Open Source CAD System For Everyone

QCAD is a free, open source application for computer aided drafting (CAD) in two dimensions 
(2D). With QCAD you can create technical drawings such as plans for buildings, interiors, 
mechanical parts or schematics and diagrams. QCAD works on Windows, macOS and Linux. The 
source code of QCAD is released under the GPL version 3 (GPLv3), a popular Open Source license.
</code>

====== Draft It V4 ======


From: http://www.cadlogic.com/

<code>
Draft It V4 is a powerful, easy to use 2D CAD Software package that is completely free 
to use. No restrictions means you're free to create, save and print your work with our 
unlimited free version. Start today and download by clicking the button below.
</code>

====== Creo Elements/Direct Modeling Express 4.0 ======

From: http://www.ptc.com/products/creo-elements-direct/modeling-express/

{{http://www.ptc.com/images/products/creo-elements-direct/modeling-express-v2/slide5.jpg}}



====== 5 free tools to draw a network diagram ======

drawing


From: https://blog.neweggbusiness.com/over-easy/5-free-tools-to-draw-a-network-diagram/


<code>
CADE is a primarily a CAD tool
yED is a Java-based resource that run in Windows and Linux.
MaSSHandra uses a real 3D environment to create network diagrams
</code>