These sites offer a variety of challenges and practical labs covering different aspects of web security, from common vulnerabilities to advanced exploitation techniques. 1. [OWASP Juice Shop](https://owasp.org/www-project-juice-shop/) > An intentionally insecure web application to learn about various security vulnerabilities. 2. [Hack The Box](https://www.hackthebox.eu/) > Online platform with virtual machines for you to test and develop cybersecurity skills. 3. [PortSwigger Web Security Academy](https://portswigger.net/web-security) > It offers free interactive labs on various web vulnerabilities. 4. [Root Me](https://www.root-me.org/) > Platform with challenges and vulnerable machines to test security skills. 5. [TryHackMe](https://tryhackme.com/) > It offers practical labs and tutorials for learning and testing web security. 6. [Damn Vulnerable Web Application (DVWA)](http://www.dvwa.co.uk/) > Vulnerable web application for practising various hacking and security techniques. 7. [VulnHub](https://www.vulnhub.com/) > Provides vulnerable virtual machines to test skills in controlled environments. 8. [Google Gruyere](https://google-gruyere.appspot.com/) > Vulnerable web application developed by Google to teach about web security. 9. [Hack This Site](https://www.hackthissite.org/) > It offers various security challenges to test and hone your skills. 10. [PentesterLab](https://www.pentesterlab.com/) > It offers courses and practical exercises on web security. Test your knowledge and let us know if these sites were really useful for your tests.