BlackWidow vs DNSAudit.io: Side-by-Side Comparison (2026)
Features, pricing, ratings, and pros & cons — compared head-to-head.
BlackWidow is a free security scanning tool. DNSAudit.io is a free security scanning tool by DNSAudit.io. Compare features, ratings, integrations, and community reviews side by side to find the best security scanning fit for your security stack.
CST VerdictBased on our analysis of NIST CSF 2.0 coverage, core features, company size fit, deployment model, here is our conclusion:
Security teams evaluating OWASP compliance without budget will find BlackWidow's free tier genuinely useful for baseline web application scanning. The combination of OSINT reconnaissance and automated fuzzing catches common misconfigurations and injection flaws that manual testing alone misses, and the 1,708 GitHub stars suggest real adoption among development teams, not just hobbyists. Skip BlackWidow if your organization needs API security, authentication bypass detection, or compliance reporting; this is a scrappy scanner for developers and small security ops who want vulnerability discovery, not a WAF replacement or compliance engine.
Data verified May 2026
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BlackWidow
BlackWidow is a Python-based web application scanner that combines OSINT gathering with automated fuzzing to identify OWASP vulnerabilities in target websites.
DNSAudit.io
Free DNS security scanner that checks domains for misconfigs and exposure.
Side-by-Side Comparison
Feature
BlackWidow
DNSAudit.io
Pricing Model
Free
Free
Category
Security Scanning
Security Scanning
Verified Vendor
Deployment & Fit
Deployment Type
Cloud
Company Size Fit
Startup, SMB, Mid-Market, Enterprise
Open Source
GitHub Stars
1,708
Last Commit
Nov 2024
Company Information
Company
DNSAudit.io
Headquarters
Founded, Size & Funding
Use Cases & Capabilities
Osint
Reconnaissance
Fuzzing
DNS Security
Misconfiguration
DMARC
SPF
DKIM
Security Scanning
DNS Rebinding
NIST CSF 2.0 Coverage
NIST CSF 2.0 Mapping
Access NIST CSF 2.0 data from thousands of security products via MCP to assess your stack coverage.
Access via MCPCore Features
- No features listed
- 40+ automated DNS security checks per domain scan
- DNS security score and letter grade (A+ to F)
- SPF, DMARC, and DKIM validation
- DNSSEC status check
- Zone transfer exposure detection
- Open resolver and DNS amplification vector detection
- DNS rebinding risk identification
- Passive DNS threat correlation (botnet/malware-linked IPs)
Community
Community Votes
0
2
Bookmarks
User Reviews
No reviews yet
5.0/5(2 reviews)
Recent Reviews
5/5
I started using DNSAudit.io to do a quick sanity check on a client's domain before a migration. Ended up finding a wildcard DNS entry that had been sitting there for years, completely forgotten. The scan is fast and doesn't require an account, which matters when you're jumping between client environments. The scoring breakdown is actually useful, not just a traffic light. It tells you what's wrong and why. And I really love they also explain how to fix all the issues you find in the results!! Also i have started using its api as well and its works amazingly good for integrations
5/5
Solid free tool for a first pass on DNS security posture. Useful if you need to hand a non-technical stakeholder something with a score and clear findings. Checks zone transfer exposure, SPF/DMARC/DKIM, DNSSEC, and a bunch of other things I normally have to check manually with dig.
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