libformatstr.py vs StealthNet AI: side-by-side comparison (2026)
libformatstr.py is a free penetration testing solution. StealthNet AI is a commercial penetration testing solution by StealthNet AI. Features, integrations, deployment and the company behind each one, side by side.
A Python library that simplifies format string vulnerability exploitation by providing tools for payload generation, memory manipulation, and automated parameter detection.
AI agent fleet for autonomous pentesting across external, API, web & vishing surfaces.
Side-by-side comparison
Feature
libformatstr.py
StealthNet AI
Pricing model
Free
Commercial
Category
Penetration Testing
Penetration Testing
Deployment and fit
Deployment type
On-Premises
Cloud
Company size fit
Mid-Market, Enterprise
Mid-Market, SMB, Startup
Open source
GitHub stars
347
–
Last commit
Jul 2017
–
Company
Company
–
StealthNet AI
Use cases and capabilities
Exploit Development
Yes
No
Vulnerability Exploitation
Yes
No
Payload Generation
Yes
No
ROP
Yes
No
AI Pentesting
No
Yes
Agentic AI Security
No
Yes
Penetration Testing Framework
No
Yes
Reconnaissance
No
Yes
Dark Web Monitoring
No
Yes
Red Team
No
Yes
VAPT
No
Yes
Social Engineering
No
Yes
Security Reporting
No
Yes
AI Compliance
No
Yes
Core features
No features listed
9 features listed
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