ImmuniWeb® On-Demand vs Whonow: Side-by-Side Comparison (2026)

ImmuniWeb® On-Demand: ImmuniWeb® On-Demand is a web application penetration testing platform that combines AI-powered automation with manual security testing to provide comprehensive vulnerability assessments and compliance reporting. built by ImmuniWeb. Core capabilities include Web Application Penetration Testing, Zero False-Positives SLA, DevSecOps Native..

Whonow: A malicious DNS server that executes DNS Rebinding attacks on-demand to bypass same-origin policy restrictions and access internal network resources..

Both serve the Penetration Testing market but differ in approach, feature depth, and target audience.

ImmuniWeb® On-Demand is developed by ImmuniWeb. Whonow is open-source with 654 GitHub stars. Vendor maturity, funding stage, and team size can be important factors when evaluating long-term viability and support quality.

ImmuniWeb® On-Demand and Whonow serve similar Penetration Testing use cases: both are Penetration Testing tools. Key differences: ImmuniWeb® On-Demand is Commercial while Whonow is Free, Whonow is open-source. Review the feature comparison above to determine which fits your requirements.