A privacy-first toolkit built by an actual security engineer.
ToolZilla is an independent suite of 43+ free professional web utilities for cybersecurity, DNS, networks, encoding and developer productivity. No sign-up, no tracking, no dark patterns — just tools that respect you.
Make professional security & web tools accessible to everyone.
Most security tools online are either paywalled, ad-ridden, or technically wrong.ToolZilla exists to give engineers, sysadmins, students and SMB owners a single trustworthy place to audit DMARC, SPF, DKIM, SSL, DNS and more — for free.
Become the most trusted neutral toolkit for email & DNS security.
By 2027, ToolZilla should be the go-to second opinion for any team verifying email authentication, debugging DNS, or auditing the security posture of a domain — with the same accuracy as enterprise tools, at zero cost.
Mondher Ouled Ahmed
Founder & Lead Engineer
Mondher Ouled Ahmed is a cybersecurity engineer and full-stack web developer based in Paris. He founded ToolZilla in 2026 with a single mission: build a free, privacy-first suite of professional web utilities that respect the user — no tracking, no sign-up, no dark patterns.
His work focuses on practical security tooling: DMARC, SPF and DKIM analysis, SSL/TLS auditing, DNS forensics, threat intelligence and load testing. Before ToolZilla, Mondher worked across enterprise SaaS, payroll software, and identity infrastructure — experience that shaped the product's emphasis on accuracy, transparency and developer experience.
Mondher writes the editorial content of ToolZilla, audits every tool against real-world security standards (RFC 7489, RFC 7208, NIST guidelines, MITRE ATT&CK), and personally curates the Security & AI feed.
Why ToolZilla exists
After a decade of working with enterprise email infrastructure and seeing the same broken DMARC records, expired certificates, and unauthenticated sender domains repeated everywhere — the conclusion was simple. Most teams don't fix what they can't see. And most online checkers either oversimplify, mislead, or hide their real findings behind a paywall.
ToolZilla was built to remove that friction : accurate results, in plain language, with the receipts. Every score we display links to the underlying RFC clause. Every recommendation we give is backed by a public reference.
Our values
Privacy by design
Most tools run 100% in your browser. We never store your input, your domain scans, or your generated content. No analytics inside the tools themselves.
Free, forever
All tools are and will remain free. No paywalls on essential features, no fake tiers, no upsell popups. Premium plans (when launched) will only add monitoring & alerting.
Engineering accuracy
Every security tool is implemented against the actual RFC or specification (RFC 7489 for DMARC, RFC 7208 for SPF, RFC 6376 for DKIM, NIST SP 800-52 for TLS).
No dark patterns
No hidden auto-renew, no "cancel-by-mail", no email scraping. The site has zero modal popups asking you to subscribe to anything.
How we're different
Faster, ad-free, modern UI. Same RFC compliance, with editorial guides explaining every result.
Newer engineering stack (React 19, TS, edge-ready), no popups, no upsell, built by an actual cybersecurity engineer — not an SEO farm.
Hand-curated tools, not auto-scraped APIs. Each tool ships with documentation, FAQs, related tools, and a guide written by the founder.
Editorial & trust commitments
- Every security tool implements the relevant RFC or NIST guideline. References cited inline.
- Editorial articles are written by the founder, reviewed quarterly, with a visible "last updated" date.
- We never publish AI-generated content without human technical review.
- Affiliate links (when present) are clearly disclosed. We never recommend products we have not personally tested.
- Bug reports and security disclosures are answered within 72 hours via the contact form.
Got a question, request, or security disclosure?
We answer every legitimate message. No bots, no auto-replies — directly from the founder.