Proof-of-Work · Invisible
Friendly Captcha
Friendly Captcha GmbH · Germany (EU) · since 2020-06
Proof-of-work CAPTCHA from Germany. Visitor's browser solves a cryptographic puzzle in the background instead of identifying images. No cookies, no fingerprinting, no images. GDPR clean and self-hostable on Business tier.
Self-hostableAudited$9/mo
Free quota
Starter: 10K solves/month
Pricing
Starter €9/mo, Advanced €39/mo, Business €240/mo
// pros
- + Cleanest privacy story among hosted options
- + EU data residency
- + Works fully behind the scenes
// cons
- − Starts at €9/mo, no free tier
- − PoW load briefly heats up low-end phones
- − Smaller threat dataset than CF/Google
// highlights
- ▸No cookies, no fingerprinting
- ▸GDPR by default (EU hosted)
- ▸Self-hostable (Business+)
- ▸Drop-in widget API
- ▸Accessibility friendly
// specs
- Pricing
- $9/mo
- Open source
- No
- Self-host
- Yes
- Audited
- Yes
- HQ
- Germany (EU)
- Since
- 2020-06
- License
- Proprietary (server) + Apache 2.0 (widget)
- Frameworks
- 8 supported