Freeware - Visio Alternative free

Today I would like to mention this useful software that is similar to Microsoft visio but free at all:

I hope that this information could be useful for someone.

Networking - Packet Tracer Free Cisco tool to have all network simulation done

There is an interesting free Cisco tools that permit you to have all sort of tests and simulations done using different Cisco devices.

An interesting part is that simulation and configuration setting up could be useful in production deployment environment as well withouth having all physical devices.:

You should register here:

You might download packet tracer from below link and with several video and training on line:

Consider athat Packet Tracer is an exciting network design, simulation and modelling tool that allows you to develop your skill set in networking, cybersecurity, and the Internet of Things (IoT). It allows you to model complex systems without the need for dedicated equipment. 

Here it is Cisco Acadamy link as well.

I hope to have time to publish more information and article related to this fantastic tool.