Kali Linux
Kali Linux is a very powerful Virtual Machine with many different developer tools installed. I've set it up inside a container using Docker. It can be used for testing Web security, Hacking, Development and so much more
When you access the Kali Linux Portal it will say it is unsafe to access. If you want to bypass that page: using chrome you can type "thisisunsafe" or using firefox you can click "Advanced" button and then "Accept the Risk and Continue". Once the webpage is accessed you will be prompted with sign in.
Username: kasm_user
Password: password
Disclaimer: I assume no responsibility of users on kali linux, and it is to be used at your own risk