Altcha
Switzerland · altcha.org · 8 vendors
ALTCHA, operated by BAU Software s.r.o., is a modern, self-hosted, privacy-first security solution designed to protect websites, APIs, and online services from spam and abuse. It utilizes an innovative proof-of-work mechanism as an alternative to traditional CAPTCHA systems. The company focuses on GDPR compliance, data ownership, and accessibility in its anti-bot and spam protection services.
Resilience scores
- Digital Sovereignty: 13
Technology vendors
- Netlify, Inc. — Technology — United States
- Proton AG — Other — Switzerland
- Shopify Inc. — Other — Canada
- and 6 more
Services catalogue
2 services in catalogue across 1 category; runs on 8 sub-vendors.
- Altcha
- CAPTCHA Alternative
Insights
Last updated 2026-08-10
8 direct vendors, 172 subvendors
Direct vendors by controlling owner country (sample)
- Switzerland: 1
- United States: 4
- United Kingdom: 1
Subvendors by controlling owner country (sample)
- Austria: 1
- Netherlands: 3
- Belgium: 1
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