AsGuardian Shield tests SaaS and security software so you don’t have to — pricing, support, and real-world usability, re-checked every month.
70+
Tools & guides covered
19
Categories covered
4
Free tools, no signup
Monthly
Re-verification cadence
Tools & platforms we cover
Editor's Pick
NordVPN
From From $3.09/mo (2-yr plan); NordLayer business from $7/user/mo
ExpressVPN
From From $6.67/mo (1-yr plan)
1Password (Business)
From Business from $7.99/user/mo (Teams from $19.95/mo flat for up to 10)
Bitwarden (Business)
From Business from $4/user/mo (Teams from $4/user/mo, billed annually)
Browse by category
Free & Interactive
One graded report: SSL, headers, and email spoofing defense
Enter any domain and get a combined security grade covering SSL/TLS certificate health, HTTP security headers, and SPF/DKIM/DMARC email authentication — the checks a real security review starts with.
Geolocation, ISP, and risk signals for any IP
Look up any IPv4/IPv6 address to see its geolocation, ISP or hosting provider, and known risk indicators — useful for investigating suspicious logins or traffic.
See the real delivery path and spoofing verdicts
Paste raw email headers to see the actual hop-by-hop delivery path and whether SPF, DKIM, and DMARC passed — the fastest way to tell a real email from a spoofed one.
Check a password against known breaches — privately
Uses Have I Been Pwned's k-anonymity API: only a partial hash of your password is ever sent, so the password itself never leaves your device.
From the blog
A practical guide to securing a crypto wallet — the real difference between hot and cold storage, seed phrase mistakes that lead to drained wallets, and how to actually store keys safely.
How AI voice cloning turned the classic "grandparent scam" into something far more convincing, how little audio it actually takes, and the specific verification habits that stop it cold.
What dark web monitoring services actually scan, how they find your data, and the real limits of what an alert can and can’t protect you from.
A practical comparison of the authenticator apps people actually use in 2026 — cloud backup, cross-device sync, and which one to pick based on how you actually use your accounts.
The actual warning signs of a compromised phone — battery drain, data spikes, strange pop-ups, unfamiliar apps — and exactly what to do about each one, for both iPhone and Android.
How business email compromise scams trick employees into wiring money or sensitive data, and the specific controls that actually stop them.
Why trust us
Every product is signed up for and used directly against a consistent set of criteria — not summarized from marketing pages.
Pricing and features change fast. We re-verify listed reviews on a monthly cadence and mark the last-verified date on every page.
We may earn a commission from links on this site, but it never influences a rating, ranking, or verdict.
Questions
Primarily through affiliate commissions when you sign up for a product through a link on this site — at no extra cost to you. We also link to our own free tools. Commission never influences a rating, ranking, or verdict; see our editorial standards.
Pricing and features are re-verified on a monthly cadence, and every review shows a last-verified date. Software changes fast — a review that isn't kept current is worse than no review at all.
Yes — no account, no email capture, no paywall. The Domain Security Report Card, IP lookup, Email Header Analyzer, and Pwned Password Checker are free to use as many times as you want.
Guides (blog posts) cover concepts, comparisons, and how-tos — broader security education. Reviews are structured, scored evaluations of a specific product, with pros, cons, pricing, and a verdict.
Browse the full library of tested reviews and side-by-side comparisons to find the best fit for your team and budget.
Browse all reviews