Software for designing network diagrams

Hi guys,
I was just wondering what software or web app do you use for designing network diagrams, like for example when asking questions here on the forums? I saw some awesome diagrams and I know there are many out there but just wondering what you guys use.

Thanks

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I typically use Visio for work.

Visio is the industry standard but if you don’t want to buy it you can use draw.io and import Cisco logos for free.

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Product brochures and MS Paint work a treat.

I have used Dia a few years ago. Seemed to work reasonably well. It’s open source and comes with a number of generic network/router/switch images.
https://sourceforge.net/projects/dia-installer/