ALTCHA

ALTCHA

BAU Software s.r.o.
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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 It doesn’t rely on intrusive CAPTCHAs or outdated blocking tactics; instead, it works invisibly behind the scenes, analyzing traffic patterns in real time to identify and stop threats before they cause harm.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

The TextCaptcha service provides access to textual CAPTCHA challenges via a simple JSON or XML API over HTTP. The question is the textual challenge that should be presented to the user. The answers are the MD5 hashes of correct lower cased answers: you should be able to check responses from real users you challenge with the question against these checksums. A text CAPTCHA is more accessible to visually impaired users than their image-based alternatives like ReCAPTCHA. Using text is also more flexible if for example you need to present the challenge over a text-only channel like SMS or IRC. The problem with text CAPTCHAs is that they provide inherently more information than a distorted image. They are parseable, under the right conditions solveable. With the advent of contextual parsing tools such as Wolfram Alpha, such simple logic puzzles have become easier to solve programatically.

Platforms Supported

Windows Not Supported
Mac Not Supported
Linux Not Supported
Cloud Supported
On-Premises Supported
iPhone Not Supported
iPad Not Supported
Android Not Supported
Chromebook Not Supported

Platforms Supported

Windows Not Supported
Mac Not Supported
Linux Not Supported
Cloud Supported
On-Premises Not Supported
iPhone Not Supported
iPad Not Supported
Android Not Supported
Chromebook Not Supported

Audience

Website owners and operators, small and large enterprises

Audience

Websites that need a simple text CAPTCHA

Support

Phone Support Not Supported
24/7 Live Support Not Supported
Online Supported

Support

Phone Support Not Supported
24/7 Live Support Not Supported
Online Not Supported

API

Offers API Supported

API

Offers API Not Supported

Screenshots and Videos

Screenshots and Videos

Pricing

0
Free, with paid plans available.
Free Version Supported
Free Trial Supported

Pricing

Free
Free Version Supported
Free Trial Not Supported

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:

Review this Software

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:

Review this Software

Training

Documentation Supported
Webinars Not Supported
Live Online Not Supported
In Person Not Supported

Training

Documentation Supported
Webinars Not Supported
Live Online Not Supported
In Person Not Supported

Company Information

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

Company Information

TextCaptcha
textcaptcha.com

Alternatives

Alternatives

reCAPTCHA

reCAPTCHA

Google
Turnstile

Turnstile

Cloudflare
hCaptcha

hCaptcha

Intuition Machines

Categories

CAPTCHA Supported

Categories

CAPTCHA Supported

Integrations

Angular Supported
CapMonster Cloud Not Supported
Drupal Supported
HTML Supported
Laravel Supported
Next.js Supported
Node.js Supported
Nuxt Supported
WordPress Supported

Integrations

Angular Not Supported
CapMonster Cloud Supported
Drupal Not Supported
HTML Not Supported
Laravel Not Supported
Next.js Not Supported
Node.js Not Supported
Nuxt Not Supported
WordPress Not Supported
Claim ALTCHA and update features and information
Claim ALTCHA and update features and information
Claim TextCaptcha and update features and information
Claim TextCaptcha and update features and information