OpenAltFinder
ALTCHA

ALTCHA

Self-hosted, GDPR-compliant CAPTCHA alternative that stops spam with privacy-friendly proof-of-work challenges.

Open source alternative to:

Google reCAPTCHAGoogle reCAPTCHAhCaptchahCaptchaCloudflare TurnstileCloudflare Turnstile
OverviewReleases

Version history

4 releases· tracked since September 22, 2026

  1. v3.4.1

    Detected on October 19, 2026

  2. v3.4.0

    Detected on October 17, 2026

  3. v3.3.0

    Detected on October 6, 2026

  4. v3.2.3

    First tracked version

    Detected on September 22, 2026

Visit ALTCHA
OpenAltFinder Score
83/100
Project Health (50%)
65/100
License (20%)
100/100
Self-hostable (20%)
100/100
Recency (10%)
100/100
How scoring works
Project Details
Platforms
Web
License
MIT
Self hostable
Yes
Repository details
Version
v3.4.1
Created
11/18/2023
Stars
2,830
Forks
142
Last commit
10/19/2026

Updated 10/19/2026, 6:00:36 AM

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Repository activity