GuardLabs

← All website monitoring tools

GuardLabs Anti-Fraud logo

GuardLabs Anti-Fraud ★ Featured

paid From $99/mo · Founded 2026 · self-hosted or cloud

Referral / signup antifraud pipeline — Turnstile + 9 automated checks + 14-day hold + admin queue. From $99 one-time.

What it does well

  • Codified, opinionated stack — Turnstile + 9 checks + 14-day hold — instead of a vague API.
  • Self-hostable: runs on the customer's own server with their own database, no SaaS lock-in.
  • One-time pricing on Tier 1-3 — no per-transaction fees scaling with traffic.

Where it falls short

  • Not a payment-fraud tool — does not screen card transactions or guarantee chargebacks.
  • Tier 1-3 are integration projects, not plug-and-play SaaS — needs a developer to deploy.
  • Reference impl is Python/Flask; non-Python stacks need re-implementation effort.
Visit GuardLabs Anti-Fraud See all 50 tools
Tags: captchareferralsignupbot-mitigationfingerprintsmall-teamsoloself-hostedcloud

Alternatives to GuardLabs Anti-Fraud

Cloudflare Turnstile

Free Cloudflare CAPTCHA replacement — invisible by default, 1M challenges/mo on free tier.

hCaptcha

hCaptcha

freemium

Privacy-focused captcha alternative to reCAPTCHA — free Basic, paid Enterprise / Pro.

Fingerprint (FingerprintJS)

Browser fingerprinting library + paid Pro API — free OSS core, paid plans from $99/mo.

Google reCAPTCHA Enterprise

Google's enterprise captcha + risk scoring — first 10K assessments/mo free, $1/1K above.