In this week’s Top 5, we highlight an introduction to copyleft, the most popular open source web servers, the background story on a Certificate Authority called Let’s Encrypt, the state of West Virgina turning to an open source game engine for their new school curriculum, and open source options for disk imaging.

Top 5 articles of the week

5. 4 alternatives to Ghost for disk cloning

Jason Baker says that “disk imaging and cloning doesn’t require an expensive tool, or proprietary one.” In this article, he lays out four open source alternatives for your disk imaging needs.

4. Godot open source game engine helps power the future in West Virginia

Godot is ideal for group learning in the classroom. In this article, find out more about how West Virginia is using Godot as it rolls out its first ever coding, app, and game design curriculum for schools.

3. Let’s Encrypt: Why create a free, automated, and open CA?

During the summer of 2012, two guys decided to start a Certificate Authority, or CA, which acts as a third-party to issue digital certificates. Learn more about why and how they started Let’s Encrypt, now one of the larger CAs in the world.

2. Top 5 open source web servers

Did you know open source powers a lot of the web? Get an introduction to five of the most popular open source web servers out there from writer Scott Nesbitt.

1. What is copyleft?

You’ve probably heard or seen the term “copyleft” but aren’t sure exactly what it means. Between copyright, open source licenses, and permissive licenses, it can get pretty murky. Become the envy of all your friends by learning all about it in Ben Cotton’s introduction to copyleft.