Lightweight Google reCaptcha alternative: ALTCHA leverages a proof-of-work mechanism to safeguard your website/APIs from spam and abuse. Unlike traditional solutions, ALTCHA is self-hosted, does not rely on cookies or fingerprinting, and ensures complete user privacy github.com/altcha-org/a...
GitHub - altcha-org/altcha: GDPR, WCAG 2.2 AA, and EAA compliant, self-hosted CAPTCHA alternative with PoW mechanism and advanced anti-spam filter.
GDPR, WCAG 2.2 AA, and EAA compliant, self-hosted CAPTCHA alternative with PoW mechanism and advanced anti-spam filter. - altcha-org/altcha
github.com
May 15, 2025 at 8:56 AM
Lightweight Google reCaptcha alternative: ALTCHA leverages a proof-of-work mechanism to safeguard your website/APIs from spam and abuse. Unlike traditional solutions, ALTCHA is self-hosted, does not rely on cookies or fingerprinting, and ensures complete user privacy github.com/altcha-org/a...
ALTCHA is a free, open-source CAPTCHA alternative built with Svelte that protects your website from spam and abuse 🤖 - madewithsvelte.com/altcha
September 22, 2026 at 10:25 AM
ALTCHA is a free, open-source CAPTCHA alternative built with Svelte that protects your website from spam and abuse 🤖 - madewithsvelte.com/altcha
🏖️🐻 Les Logiciels Libres de l'été, jour 71 :
ALTCHA : une arternative Open Source à reCAPTCHA sans douleur pour les utilisateurs, respectueuse de la vie privée et auto-hébergeable. (P)
ALTCHA : une arternative Open Source à reCAPTCHA sans douleur pour les utilisateurs, respectueuse de la vie privée et auto-hébergeable. (P)
September 1, 2026 at 7:30 PM
🏖️🐻 Les Logiciels Libres de l'été, jour 71 :
ALTCHA : une arternative Open Source à reCAPTCHA sans douleur pour les utilisateurs, respectueuse de la vie privée et auto-hébergeable. (P)
ALTCHA : une arternative Open Source à reCAPTCHA sans douleur pour les utilisateurs, respectueuse de la vie privée et auto-hébergeable. (P)
I'm currently considering switching from hCaptcha to altcha.org for Keila Cloud. Does anybody have real-world experience with large-scale Altcha deployments (bonus if with #Elixirlang)? #webdev #buildinpublic
ALTCHA - Next-Gen Captcha and Spam Protection
ALTCHA is a SaaS platform providing Captcha alternatives and AntiSpam protection for websites with privacy in mind.
altcha.org
February 27, 2026 at 7:41 AM
I'm currently considering switching from hCaptcha to altcha.org for Keila Cloud. Does anybody have real-world experience with large-scale Altcha deployments (bonus if with #Elixirlang)? #webdev #buildinpublic
ALTCHA is a free, open-source CAPTCHA alternative built with Svelte that protects your website from spam and abuse 🤖 - madewithsvelte.com/altcha
March 4, 2026 at 11:25 AM
ALTCHA is a free, open-source CAPTCHA alternative built with Svelte that protects your website from spam and abuse 🤖 - madewithsvelte.com/altcha
… I know what you’re thinking.
“Don’t do it, Chris.
Just… just don’t.”
(… but it would be so fun to see! And it would strengthen Swift’s server use cases!)
“Don’t do it, Chris.
Just… just don’t.”
(… but it would be so fun to see! And it would strengthen Swift’s server use cases!)
GitHub - altcha-org/altcha: GDPR, WCAG 2.2 AA, and EAA compliant, self-hosted CAPTCHA alternative with PoW mechanism.
GDPR, WCAG 2.2 AA, and EAA compliant, self-hosted CAPTCHA alternative with PoW mechanism. - altcha-org/altcha
github.com
September 11, 2025 at 4:10 AM
… I know what you’re thinking.
“Don’t do it, Chris.
Just… just don’t.”
(… but it would be so fun to see! And it would strengthen Swift’s server use cases!)
“Don’t do it, Chris.
Just… just don’t.”
(… but it would be so fun to see! And it would strengthen Swift’s server use cases!)
Next time somebody asks me a question that requires some thinking, I’m going to ask them to perform a short unnecessary computation first to prove they are serious. Yes, I am implementing #ALTCHA in my user interface!
September 20, 2026 at 4:17 PM
Next time somebody asks me a question that requires some thinking, I’m going to ask them to perform a short unnecessary computation first to prove they are serious. Yes, I am implementing #ALTCHA in my user interface!
ALTCHA is a free, open-source CAPTCHA alternative built with Svelte that protects your website from spam and abuse 🤖 - madewithsvelte.com/altcha
April 17, 2025 at 10:25 AM
ALTCHA is a free, open-source CAPTCHA alternative built with Svelte that protects your website from spam and abuse 🤖 - madewithsvelte.com/altcha
ALTCHA provides a free, open-source Captcha alternative - various versions including self hosted and WordPress plugin. ReCaptcha is annoying and 300kb+ which slows down your site
altcha.org
#webDevelopment #wordPress
altcha.org
#webDevelopment #wordPress
ALTCHA - Next-Gen Captcha and Spam Protection
ALTCHA is a SaaS platform providing Captcha alternatives and AntiSpam protection for websites with privacy in mind.
altcha.org
July 21, 2025 at 1:20 PM
ALTCHA provides a free, open-source Captcha alternative - various versions including self hosted and WordPress plugin. ReCaptcha is annoying and 300kb+ which slows down your site
altcha.org
#webDevelopment #wordPress
altcha.org
#webDevelopment #wordPress
I recently heard of altcha.org
ALTCHA - Next-Gen Captcha and Spam Protection
ALTCHA is a SaaS platform providing Captcha alternatives and AntiSpam protection for websites with privacy in mind.
altcha.org
April 25, 2026 at 5:14 PM
I recently heard of altcha.org
Pour éviter d'utiliser turnstile de cloudflare (protection anti spam sur les formulaires), je viens de trouver altcha qui semble intéressant
altcha.org
altcha.org
ALTCHA - Next-Gen Captcha and Spam Protection
ALTCHA is a SaaS platform providing Captcha alternatives and AntiSpam protection for websites with privacy in mind.
altcha.org
November 28, 2025 at 5:15 PM
Pour éviter d'utiliser turnstile de cloudflare (protection anti spam sur les formulaires), je viens de trouver altcha qui semble intéressant
altcha.org
altcha.org
yee, welc!
Unsure if you have already checked this out, but it's a self-hosted captcha which has its own pros and cons.
altcha.org
But if you've already investigated this and it doesn't fit then, alas, then that's all I got. u_u finding privacy minded captcha is a pain x_x
Unsure if you have already checked this out, but it's a self-hosted captcha which has its own pros and cons.
altcha.org
But if you've already investigated this and it doesn't fit then, alas, then that's all I got. u_u finding privacy minded captcha is a pain x_x
ALTCHA - Next-Gen Captcha and Spam Protection
ALTCHA is a SaaS platform providing Captcha alternatives and AntiSpam protection for websites with privacy in mind.
altcha.org
June 2, 2025 at 5:07 AM
yee, welc!
Unsure if you have already checked this out, but it's a self-hosted captcha which has its own pros and cons.
altcha.org
But if you've already investigated this and it doesn't fit then, alas, then that's all I got. u_u finding privacy minded captcha is a pain x_x
Unsure if you have already checked this out, but it's a self-hosted captcha which has its own pros and cons.
altcha.org
But if you've already investigated this and it doesn't fit then, alas, then that's all I got. u_u finding privacy minded captcha is a pain x_x
🔗 Liens utiles ALTCHA :
👉 Le projet : github.com/altcha-or...
👉 La documentation : altcha.org/docs/
Suivez nous pour un été Libre et Open Source 🌞
September 1, 2026 at 7:30 PM
🔗 Liens utiles ALTCHA :
👉 Le projet : github.com/altcha-or...
👉 La documentation : altcha.org/docs/
Suivez nous pour un été Libre et Open Source 🌞
📦 yaknet/yacaptcha 1.5.0
Official PHP SDK for YakNet yaCaptcha (Altcha-based) & WAF integration.
🔗 https://github.com/y-packages/yacaptcha
Official PHP SDK for YakNet yaCaptcha (Altcha-based) & WAF integration.
🔗 https://github.com/y-packages/yacaptcha
September 21, 2026 at 6:00 PM
📦 yaknet/yacaptcha 1.5.0
Official PHP SDK for YakNet yaCaptcha (Altcha-based) & WAF integration.
🔗 https://github.com/y-packages/yacaptcha
Official PHP SDK for YakNet yaCaptcha (Altcha-based) & WAF integration.
🔗 https://github.com/y-packages/yacaptcha
セルフホストが可能なCAPTCHA実装。ほほう
GitHub - altcha-org/altcha: GDPR, WCAG 2.2 AA, and EAA compliant, self-hosted CAPTCHA alternative with PoW mechanism and advanced anti-spam filter.
GDPR, WCAG 2.2 AA, and EAA compliant, self-hosted CAPTCHA alternative with PoW mechanism and advanced anti-spam filter. - altcha-org/altcha
github.com
May 17, 2025 at 3:13 PM
セルフホストが可能なCAPTCHA実装。ほほう
ALTCHA - Le CAPTCHA qui ne file pas vos données à Google
ALTCHA - Le CAPTCHA qui ne file pas vos données à Google | Le site de Korben
korben.info
December 2, 2025 at 6:05 AM
ALTCHA - Le CAPTCHA qui ne file pas vos données à Google
Implementing a tracking free captcha with altcha and Nuxt
Does it work?
hugo.writizzy.com/p/implementi...
Does it work?
hugo.writizzy.com/p/implementi...
Implementing a tracking-free captcha with Altcha and Nuxt
Setting up Altcha captcha with Nuxt. Open-source, no tracking, includes code... and why it didn't solve my spam problem.
hugo.writizzy.com
December 3, 2025 at 8:13 AM
Implementing a tracking free captcha with altcha and Nuxt
Does it work?
hugo.writizzy.com/p/implementi...
Does it work?
hugo.writizzy.com/p/implementi...
ALTCHA - Le CAPTCHA qui ne file pas vos données à Google korben.info/altcha-captc...
ALTCHA - Le CAPTCHA qui ne file pas vos données à Google | Le site de Korben
Vous savez ce qui est marrant avec reCAPTCHA ? C’est que pendant des années, on nous a fait déchiffrer des plaques d’immatriculation floues, ...
korben.info
December 2, 2025 at 6:06 AM
ALTCHA - Le CAPTCHA qui ne file pas vos données à Google korben.info/altcha-captc...
Newsletters shouldn't spy on you.
At virebent.art, we run listmonk on self-hosted infrastructure: zero tracking pixels, no telemetry, ALTCHA proof-of-work, and full privacy by design.
We stand for digital sovereignty, open protocols, and verifiable publishing.
newsletter.virebent.art
At virebent.art, we run listmonk on self-hosted infrastructure: zero tracking pixels, no telemetry, ALTCHA proof-of-work, and full privacy by design.
We stand for digital sovereignty, open protocols, and verifiable publishing.
newsletter.virebent.art
Virebent.art, Self-hosted Privacy Infrastructure
Virebent.art, self-hosted privacy infrastructure. No tracking, no ads, no corporate clouds.
virebent.art
September 26, 2026 at 1:37 AM
Newsletters shouldn't spy on you.
At virebent.art, we run listmonk on self-hosted infrastructure: zero tracking pixels, no telemetry, ALTCHA proof-of-work, and full privacy by design.
We stand for digital sovereignty, open protocols, and verifiable publishing.
newsletter.virebent.art
At virebent.art, we run listmonk on self-hosted infrastructure: zero tracking pixels, no telemetry, ALTCHA proof-of-work, and full privacy by design.
We stand for digital sovereignty, open protocols, and verifiable publishing.
newsletter.virebent.art
Learn how to set up free bot and fake account protection with CrowdSec and ALTCHA on Ubuntu. Block fake signups, spam, and abusive bots.
Full guide here: ostechnix.com/build-free-b...
#Crowdsec #Altcha #Captcha #reCAPTCHA #BotProtection #IntrusionPreventionSystem #Website
Full guide here: ostechnix.com/build-free-b...
#Crowdsec #Altcha #Captcha #reCAPTCHA #BotProtection #IntrusionPreventionSystem #Website
Set Up Free Bot and Fake Account Protection for Websites - OSTechNix
Learn how to set up free bot and fake account protection with CrowdSec and ALTCHA on Ubuntu. Block fake signups, spam, and abusive bots.
ostechnix.com
August 12, 2026 at 12:18 PM
Learn how to set up free bot and fake account protection with CrowdSec and ALTCHA on Ubuntu. Block fake signups, spam, and abusive bots.
Full guide here: ostechnix.com/build-free-b...
#Crowdsec #Altcha #Captcha #reCAPTCHA #BotProtection #IntrusionPreventionSystem #Website
Full guide here: ostechnix.com/build-free-b...
#Crowdsec #Altcha #Captcha #reCAPTCHA #BotProtection #IntrusionPreventionSystem #Website
What more they use ALTCHA which is open source and can be self-hosted - worth checking! github.com/altcha-org/a...
GitHub - altcha-org/altcha: GDPR, WCAG 2.2 AA, and EAA compliant, self-hosted CAPTCHA alternative with PoW mechanism and advanced anti-spam filter.
GDPR, WCAG 2.2 AA, and EAA compliant, self-hosted CAPTCHA alternative with PoW mechanism and advanced anti-spam filter. - altcha-org/altcha
github.com
June 16, 2025 at 11:28 AM
What more they use ALTCHA which is open source and can be self-hosted - worth checking! github.com/altcha-org/a...
📦 markocupic/contao-altcha-antispam 0.6.5
ALTCHA antispam form widget for Contao CMS
🔗 https://github.com/markocupic/contao-altcha-antispam
ALTCHA antispam form widget for Contao CMS
🔗 https://github.com/markocupic/contao-altcha-antispam
December 6, 2025 at 10:58 PM
📦 markocupic/contao-altcha-antispam 0.6.5
ALTCHA antispam form widget for Contao CMS
🔗 https://github.com/markocupic/contao-altcha-antispam
ALTCHA antispam form widget for Contao CMS
🔗 https://github.com/markocupic/contao-altcha-antispam