Shannon is an autonomous white-box AI pentesting tool for web applications and APIs. It analyzes authorized source code, identifies attack vectors, attempts proof-by-exploitation, and produces remediation-ready reports. Shannon Lite is AGPL-3.0 for local use, while Shannon Pro is the commercial Keygraph platform for continuous security testing.
Alternatives to Arnica
3 editor-selected alternatives · Arnica overview →
source: tools.alternatives · stored order · active records only; review scores are annotations and never change membership or order
A directional evidence panel appears only when the substitute rationale, trade-offs, sources, and verification date have been recorded. Older selections without that panel remain visible but are unclassified under the new evidence contract.
DeepTeam is an open-source red-teaming framework for systematically testing LLM applications against 40+ adversarial attack types. It covers OWASP Top 10 for LLMs including jailbreaks, prompt injection, PII leakage, and hallucination attacks. Built as the sister project of DeepEval for security testing alongside evaluation. Apache-2.0 licensed.
MCP-Scan is a security tool that scans MCP servers for vulnerabilities including tool poisoning, prompt injection, cross-origin escalation, and rug pull attacks. Acquired by Snyk in 2026, it is the first dedicated security scanner for the MCP ecosystem. It analyzes tool descriptions, permissions, and behavior patterns to detect malicious or compromised MCP servers before they can exploit AI agents.
Open-source Arnica alternatives
Shannon, DeepTeam, MCP-Scan — see all open-source developer tools.
Free Arnica alternatives
More AI Security & DevSecOps tools
same category, not editor-selected alternatives — see how Arnica compares →
FAQ
Which Arnica alternative is listed first?
Shannon is first in the editor-selected list of 3 Arnica alternatives and carries an editorial review score of 84/100. The stored order is editorial; review scores do not determine membership or position.
Are there open-source Arnica alternatives?
Yes — Shannon, DeepTeam, MCP-Scan are open source.
Are there free Arnica alternatives?
Yes — Shannon, DeepTeam offer a free plan or free tier.