EU Sovereignty Score
EU sovereignCaptcha & Bot DetectionHeadquarters: EE

Private Captcha: sovereignty score and 8 European alternatives

Private Captcha is a CAPTCHA service that blocks bots and spam without puzzles or tracking. The widget requests a challenge from the server and silently solves a cryptographic task in the background (proof-of-work); the difficulty can adapt. Integration uses a widget element with a site key, and official integrations exist for platforms and languages such as WordPress, React, Python and PHP. The service is offered as SaaS and can also be self-hosted.

Private Captcha is developed by Intmaker OÜ, an independent company based in Estonia. According to the vendor, its servers, storage, CDN and email are owned and operated by EU-based companies and data does not leave the EU; EU-only endpoints are offered, and no cookies, tracking or fingerprinting are used. The source code is on GitHub under the PolyForm Noncommercial licence: self-hosting the community edition is permitted for non-commercial use, while commercial use requires a licence. It is therefore source-available rather than open source in the usual sense. For European organisations, this is an EU-based provider with the option of running the service on their own infrastructure.

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Sovereignty score
71 / 1000 = high exposure
100 = sovereign
  • Jurisdiction SOV-2100
    Headquartered in the EU: European law applies
  • Data residency SOV-3100
    EU-only hosting
  • Cryptographic key sovereignty SOV-360
    Key management with a European vendor
  • Freedom from lock-in SOV-640
    Closed source: switching requires data migration
  • Source & runtime sovereignty SOV-4 · SOV-655
    Closed source, runtime with the vendor

SOV codes: the matching objective in the European Commission's Cloud Sovereignty Framework. Official source

How the score is calculated

Facts and evidence

Last checked July 2, 2026
HeadquartersEE (EU)Verified by hand
Sovereignty modelVendor-hosted (EU)Verified by hand
Data hostingEUVerified by hand
Open-sourceNoVerified by hand
GDPR-compliantYesVendor-stated
Hosting signalCDN77 - Datacamp Limited, GB (CZ)Technically measured
CategoryCaptcha & Bot Detection
TypeProduct
Websiteprivatecaptcha.com ↗

The hosting signal shows the network that serves the vendor's website, often a CDN, and not necessarily where the service or your data is hosted. How we verify · Something wrong? Suggest a correction

Top EU-based & GDPR-compliant alternatives to Private Captcha

The European alternatives to Private Captcha come from our knowledge base of over 6,200 vendors. We only list vendors headquartered in the EU or the EEA; fully European-owned vendors rank before vendors with a foreign owner. For each alternative you see the country, the open-source status and a short description.

Score per alternative: 0 = high exposure, 100 = sovereign

15 European Captcha & Bot Detection vendors are in the catalogue. View the whole category · Submit an alternative · View category on the map

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Why digital sovereignty matters with Private Captcha

Private Captcha is headquartered in EE and therefore falls under European law: the GDPR, NIS2 and the Data Act. No foreign legislation can compel access to your data.

Data is hosted exclusively in the EU, so Private Captcha scores best on data residency.

Private Captcha is closed source and hosted by the vendor. The encryption keys and the runtime sit with the vendor and switching requires data migration. Ask about bring-your-own-key, export options and open standards.

What this means for your organisation depends on your whole stack and context. The free assessment weighs Private Captcha together with your other vendors and gives a total score, a heatmap and the main risk drivers.

Frequently asked questions

What is the best European alternative to Private Captcha?

It depends on your use case. Strong EU alternatives to Private Captcha include ALTCHA, ALTCHA Sentinel and Atmosvere. On this page you can compare 8 EU alternatives by jurisdiction, data residency and open-source status.

Are there open-source alternatives to Private Captcha?

Yes. Open-source EU alternatives to Private Captcha include ALTCHA and CaptchaService (Stad München). These keep your data fully under your own control and let you self-host if you want to.

Is Private Captcha GDPR-compliant and where is the data hosted?

Private Captcha is headquartered in EE (EU) and hosts data in EU. That makes Private Captcha an EU-sovereign choice in its own right; the EU alternatives on this page are comparable European tools.

Details and sources

Verified by handHeadquarters, owner, hosting locations and licence have been checked by us against public sources. Free of charge and for every vendor, not a paid label. Nothing in this knowledge base is taken over automatically. Last checked on July 2, 2026.

Sources

This record was checked via the vendor's website and legal notice during the full audit of June and July 2026. Source links have been recorded per record since 20 September 2026.

Compliance evidence

The links below point to the vendor's own public documents. We only record what we found: a missing link means "not found publicly", not "not compliant".

No public compliance evidence has been recorded for this vendor yet. Do you know its DPA or subprocessor list? Something wrong? Suggest a correction

Digital sovereignty in Captcha & Bot Detection

Captcha & Bot Detection: Services that detect whether a real user or bot is visiting a website. In this category the choice of vendor determines who has legal access to your data, where that data lives and how easily you can switch later.

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8 European alternatives to Private Captcha — GDPR-compliant & EU-hosted · EU Sovereignty Score