ALTCHA

ALTCHA

BAU Software s.r.o.
Turnstile

Turnstile

Cloudflare
+
+

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About

ALTCHA is a modern security and privacy-focused platform built to defend web services from bots and abuse — without compromising the user experience. At the heart of its ecosystem is ALTCHA Sentinel, a next-generation threat detection and mitigation system designed to protect websites, APIs, and applications from automated attacks, spam, and other forms of abuse. ALTCHA Sentinel stands out by combining adaptive machine learning, behavioral analysis, and smart verification techniques. It doesn’t rely on intrusive CAPTCHAs or outdated blocking tactics; instead, it works invisibly behind the scenes, analyzing traffic patterns in real time to identify and stop threats before they cause harm. Sentinel protects critical entry points like sign-up forms, login pages, and comment sections — all while keeping the experience seamless for real users.

About

Turnstile delivers frustration-free, CAPTCHA-free web experiences to website visitors - with just a simple snippet of free code. Moreover, Turnstile stops abuse and confirms visitors are real without the data privacy concerns or awful UX that CAPTCHAs thrust on users. Give your web visitors an even better experience. Turnstile confirms they are real with no visual puzzle - totally transparent to visitors. Turnstile always preserves the privacy of web visitors on your site - without sacrificing effectiveness. Unlike other CAPTCHA options, we never harvest data for ad retargeting. Deploy in minutes with just a quick code snippet - and totally free of charge. Humans spend about 500 years each day solving CAPTCHAs - wasting time and creating frustration. This is why Cloudflare built a better alternative to CAPTCHAs with Managed Challenge and now Turnstile.

Platforms Supported

Windows
Mac
Linux
Cloud
On-Premises
iPhone
iPad
Android
Chromebook

Platforms Supported

Windows
Mac
Linux
Cloud
On-Premises
iPhone
iPad
Android
Chromebook

Audience

Website owners and operators, small and large enterprises

Audience

Companies that want a frustration-free CAPTCHA solution for their website

Support

Phone Support
24/7 Live Support
Online

Support

Phone Support
24/7 Live Support
Online

API

Offers API

API

Offers API

Screenshots and Videos

Screenshots and Videos

Pricing

0
Free Version
Free Trial

Pricing

Free
Free Version
Free Trial

Reviews/Ratings

Overall 0.0 / 5
ease 0.0 / 5
features 0.0 / 5
design 0.0 / 5
support 0.0 / 5

This software hasn't been reviewed yet. Be the first to provide a review:

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Reviews/Ratings

Overall 4.0 / 5
ease 4.0 / 5
features 5.0 / 5
design 5.0 / 5
support 3.0 / 5

Training

Documentation
Webinars
Live Online
In Person

Training

Documentation
Webinars
Live Online
In Person

Company Information

BAU Software s.r.o.
Founded: 2023
Czechia
altcha.org

Company Information

Cloudflare
Founded: 2010
United States
www.cloudflare.com/products/turnstile/

Alternatives

Alternatives

Arkose MatchKey

Arkose MatchKey

Arkose Labs
reCAPTCHA

reCAPTCHA

Google
hCaptcha

hCaptcha

Intuition Machines

Categories

Categories

Integrations

Angular
Anti-Captcha
Best Captcha Solver
CAPTCHAs.IO
CapMonster Cloud
CapSolver
Cloudflare
Drupal
HTML
HostBill
Laravel
MultiBot
Next.js
Node.js
NopeCHA
Nuxt
WordPress

Integrations

Angular
Anti-Captcha
Best Captcha Solver
CAPTCHAs.IO
CapMonster Cloud
CapSolver
Cloudflare
Drupal
HTML
HostBill
Laravel
MultiBot
Next.js
Node.js
NopeCHA
Nuxt
WordPress
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