VulnHub
VulnHub provides materials allowing anyone to gain practical hands-on experience with digital security, computer applications and network administration tasks.
5 Alternatives To VulnHub
Box
Box offers secure content management and collaboration for individuals, teams and businesses, enabling secure file sharing and access to your files online.
Hack
A programming language for HHVM that interoperates seamlessly with PHP
HackThisSite
Hack This Site is a legal free training ground for users to test and expand their hacking skills.
PENTESTON
Vulnerability assessment and collaborative penetration testing platform
Shellter
The right place for anyone looking for challenges to practice.