What is the difference between Hash Extender vs Tenzai?

**Hash Extender**: Hash Extender is a command-line tool that automates length extension attacks against various hashing algorithms including MD5, SHA-1, SHA-256, and others.. **Tenzai**: Agentic AI platform for continuous, autonomous penetration testing of enterprise apps. built by Tenzai. Core capabilities include Autonomous AI-driven penetration testing of enterprise applications, Continuous vulnerability discovery and exploitation, Automated vulnerability remediation guidance.. Both serve the Penetration Testing market but differ in approach, feature depth, and target audience.

Who makes Hash Extender vs Tenzai?

**Hash Extender** is open-source with 1,188 GitHub stars. **Tenzai** is developed by Tenzai. Vendor maturity, funding stage, and team size can be important factors when evaluating long-term viability and support quality.

Is Hash Extender a good alternative to Tenzai?

Hash Extender and Tenzai serve similar Penetration Testing use cases: both are Penetration Testing tools, both cover Vulnerability Exploitation. Key differences: Hash Extender is Free while Tenzai is Commercial, Hash Extender is open-source. Review the feature comparison above to determine which fits your requirements.

Hash Extender vs Tenzai: Features, Integrations, Reviews (2026) | CybersecTools

Hash Extender vs Tenzai: Side-by-Side Comparison (2026)

Features, pricing, ratings, and pros & cons — compared head-to-head.

Hash Extender is a free penetration testing tool. Tenzai is a commercial penetration testing tool by Tenzai. Compare features, ratings, integrations, and community reviews side by side to find the best penetration testing fit for your security stack.

CST Verdict

Based on our analysis of core features, here is our conclusion:

Hash Extender

Penetration testers validating MD5 and SHA-1 implementations should start with Hash Extender; it's the fastest way to confirm length extension vulnerabilities without writing custom exploit code. The tool supports seven hash algorithms and runs as a standalone CLI, meaning no dependencies or setup friction during engagements. Skip this if your targets use modern hash constructs like SHA-3 or HMAC-based schemes; Hash Extender is built for legacy systems and will sit idle on most contemporary infrastructure.

Data verified May 2026

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Hash Extender

Hash Extender is a command-line tool that automates length extension attacks against various hashing algorithms including MD5, SHA-1, SHA-256, and others.

Penetration Testing

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