Category: Captcha & Bot Detection
6 European alternatives to ALTCHA — GDPR-compliant & EU-hosted.
Czech open-source proof-of-work captcha alternative
Facts
- Headquarters
- CZ (EU)
- Category
- Captcha & Bot Detection
- Type
- Product
- GDPR-compliant
- Yes
- Open-source
- Yes
- Data hosting
- EU
Top EU-based & GDPR-compliant alternatives to ALTCHA
- Captcha.eu↗
Proof-of-work based, cookieless CAPTCHA alternative operated by Captcha GmbH (Vienna, Austria, registered at Handelsgericht Wien), hosted entirely in Austria, with active customers including OBB and Bauer Media Group as of 2026.
AT · commercial
- Myra EU CAPTCHA↗
GDPR-compliant, cookieless bot-protection CAPTCHA product from Myra Security GmbH, a Munich-based, ISO 27001/BSI C5/PCI DSS certified German security vendor, marketed explicitly as independent from US CLOUD Act/FISA 702 jurisdiction.
DE · commercial
- Private Captcha↗
Privacy-first CAPTCHA/bot-protection service made and hosted in the EU, built by Estonian company Intmaker OU, offering EU-only endpoints, no cookies/tracking, and a self-hosting option for full data control.
EE · commercial
Frequently asked questions
What is the best European alternative to ALTCHA?
It depends on your use case. Strong EU alternatives to ALTCHA include Captcha.eu, CaptchaFox and Friendly Captcha. On this page you can compare 6 EU alternatives by jurisdiction, data residency and open-source status.
Are there open-source alternatives to ALTCHA?
Our list of EU alternatives to ALTCHA is mostly commercial options. Browse the category on the map for open-source choices.
Is ALTCHA GDPR-compliant and where is the data hosted?
ALTCHA is headquartered in CZ (EU) and hosts data in EU. It is also open-source, so you can self-host it. That makes ALTCHA an EU-sovereign choice in its own right; the EU alternatives on this page are comparable European tools.