Virtual Machines

For a more updated list refer to Security Teaching & Practice Solutions

Hack The Box	FreePaid	Virtual Machines
TryHackMe	FreePaid	Virtual Machines
VulnHub.com	Free	Virtual Machines
Root.me	FreePaid	Virtual Machines
Penetration Testing Practice Lab / Vulnerable Apps/Systems
Vulhub.org	Free	Pre-Built Vulnerable Environments Based on Docker-Compose
Vulapps	Free	Quickly build various vulnerability and security tool environments
Upload-Labs	Free	PHP-based platform that collects various upload vulnerabilities encountered in penetration testing and CTF. It aims to help everyone have a comprehensive understanding of upload vulnerabilities.
Crypto - Cryptopals	Free	collection of exercises that demonstrate attacks on real-world crypto