VNIS is described as 'Comprehensive security solution for Websites, Applications, and APIs, built on AI and Machine Learning to counter increasingly sophisticated cyberattacks such as zero-day exploits, DDoS, SQL Injection, and OWASP Top 10 vulnerabilities' and is an app. There are more than 50 alternatives to VNIS for a variety of platforms, including Web-based, SaaS, Self-Hosted, Linux and Windows apps. The best VNIS alternative is Cloudflare, which is free. Other great apps like VNIS are DNS4EU, Anubis, DigitalOcean and Duck DNS.