ALTCHA
ALTCHA · current 3.2.2
The current version of ALTCHA is 3.2.2 (as of 19/08/2026). patchletter checks the official source daily and emails you every new release.
ALTCHA at a glance
ALTCHA is an open-source, self-hosted alternative to traditional CAPTCHA services. Instead of visual puzzles, the widget hands the browser a compute-bound proof-of-work task whose solution is verified on the server. What makes it attractive to administrators is that it needs no cookies, sends no personal data to third parties and embeds no external scripts, which simplifies privacy-compliant use on sign-in, contact and registration forms.
The project bundles the widget and the server-side verification libraries in a single repository and ships its output as regular releases. Anyone integrating ALTCHA themselves tracks these releases in order to pick up bug fixes and security updates promptly.
When updating, it pays to check compatibility between the widget and the verification library, since the two must work together. Changes to the challenge format or to default parameters should be validated in a staging environment before going live, so existing integrations keep producing valid responses.
Version history & changelog · as detected by patchletter
| Version | Channel | Date | Notes |
|---|---|---|---|
| 3.2.2 | STABLE | 19/08/2026 | Release notes → |
Frequently asked questions
- What is the latest version of ALTCHA?
- ALTCHA 3.2.2, released 19/08/2026. patchletter checks the vendor's official source daily for new releases.
- Where can I find the ALTCHA release notes?
- The version history above links to the vendor's official release notes where the vendor publishes them. patchletter deliberately stores no vendor full texts.
- How do I get notified about new ALTCHA updates?
- Free by email: patchletter reports every new release — instantly or bundled as a digest. Unsubscribe anytime with one click.
Never miss a ALTCHA update
We check the source daily and email you — instantly or as a digest. Free, one-click unsubscribe.
Watch ALTCHAEmbed this badge
Shows the current ALTCHA version and updates itself. Free to use, no account needed.
[](https://patchletter.com/en/software/altcha)https://patchletter.com/badge/altcha.svgAlso available: ?v=eol (end of support) and ?v=cve (actively exploited).
