off-by-slash vs Burp Suite Professional: 2026 Comparison
off-by-slash is a free penetration testing tool. Burp Suite Professional is a commercial penetration testing tool by PortSwigger Ltd.. Compare features, ratings, integrations, and community reviews side by side to find the best penetration testing fit for your security stack.
CST VerdictBased on our analysis of NIST CSF 2.0 coverage, company size fit, deployment model, here is our conclusion:
Penetration testers running Burp Suite will find off-by-slash saves hours hunting NGINX misconfigurations that slip past manual code review. The tool automates detection of alias traversal flaws by watching HTTP traffic patterns in real time, catching the specific path-normalization bugs that leak access to restricted directories. Skip this if your infrastructure doesn't use NGINX or if you're looking for a general-purpose path traversal scanner; it's built narrow and stays narrow.
