Tryhackme
Hackthebox
Pentester Lab
tcm-security
Vulnhub
Offensive Security
https://www.offensive-security.com/
Vulnmachines
Portswigger Web Security Academy
https://portswigger.net/web-security
Hacker101
PicoCTF
HackMyVm
Try2hack
Cybrary
RangeForce
Letsdefend
BugBountyHunt3r
https://www.bugbountyhunter.com/
CyberSecLabsUK
https://www.cyberseclabs.co.uk/
certifiedsecure
https://www.certifiedsecure.com/frontpage
CTFTime
247CTF