- Hacker101 | Good Exercises for Beginners, can earn you private Invites on HackerOne
- Web Security Academy
- HackThisSite
- CTFChallenge | Web CTF based on real vulnerabilities
- Hacksplaining
- Pentesterlab | Good Labs with a broad variety of Topics, some very good Web Application Exercises
- BugBountyHunter | Learn how to test for security vulnerabilities on web applications
- 0l4bs - Cross-site scripting labs for web application security enthusiasts - by tegal1337
- Will it CORS? | Tell this magic CORS machine what you want, and it'll tell you exactly what to do
- XSS Labs from PwnFunction Great Labs in a beautiful layout
- VulnHuB
- W3chhalls
- [PicoCTF][https://picoctf.org/]
- Root-Me
- OverTheWire
- TryHackMe | Cool Hacking & Pentesting Labs with Web Challenges
- HackTheBox | provides Testing Labs, some Web Application Challenges
- Cyberseclabs
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