ImmuniWeb® On-Demand vs Probely (Snyk API & Web): Side-by-Side Comparison (2026)

ImmuniWeb® On-Demand

Security teams running development cycles faster than their DAST tooling can keep up will find ImmuniWeb® On-Demand cuts through the noise; it combines threat-led manual testing with AI automation to eliminate false positives while maintaining a rapid delivery SLA, meaning your developers actually trust the findings. The zero false-positives guarantee is backed by compliance reporting that maps cleanly to ID.RA and PR.PS functions under NIST CSF 2.0, giving you audit credibility without the usual noise. Skip this if your main need is internal application discovery or continuous monitoring across hundreds of microservices; On-Demand is built for pentesting depth on a defined scope, not breadth.

Probely (Snyk API & Web)

Mid-market and enterprise teams building APIs or JavaScript-heavy web apps need Probely (Snyk API & Web) because it actually discovers what you're running before it scans it, eliminating the guesswork that kills DAST programs. The headless Chrome spider handles modern SPAs and the native API scanning accepts OpenAPI and Postman Collections directly from your existing tooling, cutting weeks off typical deployments. Skip this if your primary concern is SAST or supply chain risk; Probely owns the runtime security layer (NIST ID.RA and PR.PS) but doesn't pretend to be your code scanner.