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ALTCHA VS visualCaptcha

Compare ALTCHA VS visualCaptcha and see what are their differences

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ALTCHA logo ALTCHA

ALTCHA is a free CAPTCHA alternative that uses a proof-of-work mechanism to protect your website, and online services from spam.

visualCaptcha logo visualCaptcha

The best captcha alternative. Accessible, Mobile-friendly, and Retina-ready! Available for Node.js, PHP, Ruby, Meteor, jQuery, Angular, and vanilla JS.
  • ALTCHA Simple, user-friendly verification.
    Simple, user-friendly verification. //
    2024-04-30

ALTCHA uses a proof-of-work mechanism to protect your website, APIs, and online services from spam and unwanted content. Unlike other solutions, ALTCHA is free, open-source and self-hosted, without external services, does not use cookies nor fingerprinting, does not track users, and is fully compliant with GDPR.

  • visualCaptcha Landing page
    Landing page //
    2023-04-13

ALTCHA features and specs

  • Privacy-friendly, GDPR compliant
    No cookies, no tracking, no external servers.
  • Frustration-free
    No visual puzzles. PoW Captcha is better for people.
  • Spam Filtering
    Employs machine learning to categorize submitted data and identify unwanted messages.
  • Open-source
    Free to use, free to modify. MIT licensed.
  • End-to-End Encryption
    The Encryption Shield mitigates data breaches by encrypting data with asymmetric end-to-end encryption.
  • Digital e-Signatures
    e-Signatures made easy with eIDAS-compliant simple and advanced signatures - qualified digital certificates and DigiDoc.
  • Visual Form Builder
    Create custom forms effortlessly with the visual form builder, empowering users to design tailored solutions without any coding expertise.
  • File Attachments
    Safely request and securely store file attachments with end-to-end encryption, ensuring the utmost protection for your data.
  • Send to Email or Webhook
    Configure forms to seamlessly send data to email, APIs, or webhooks using processors, facilitating efficient data handling and integration with your workflows.

visualCaptcha features and specs

  • Accessibility
    visualCaptcha offers an accessible alternative to traditional CAPTCHA systems by providing image-based challenges that are easier to complete for users who have trouble with text-based CAPTCHAs.
  • User Experience
    The use of images makes the challenges more engaging and user-friendly compared to often frustrating traditional text CAPTCHAs.
  • Mobile Friendly
    visualCaptcha is designed to be responsive and works well on mobile devices, providing a seamless experience on various screen sizes.
  • Customization
    It allows easy customization of the CAPTCHA images and language to suit the specific needs of a website, enhancing brand consistency.
  • Bots Resistance
    By using image recognition challenges, visualCaptcha can effectively thwart bots that are designed to breach traditional CAPTCHAs.

Possible disadvantages of visualCaptcha

  • Learning Curve for Users
    Users who are unfamiliar with visualCaptcha may require time to understand how to interact with the image-based challenges, potentially impacting first-time user experience.
  • Security Concerns
    As with any CAPTCHA system, visualCaptcha is vulnerable to advancements in machine learning and computer vision that could solve image-based challenges, potentially reducing its effectiveness over time.
  • Load Times
    The inclusion of images can increase load times compared to text-based CAPTCHAs, which could impact website performance, especially on slower internet connections.
  • Implementation Complexity
    Depending on the platform or technology stack, integration of visualCaptcha might require more effort and technical know-how compared to simpler CAPTCHA solutions.
  • Limited Text-Based Options
    While visualCaptcha excels with its image challenges, it might not fully cater to users who are specifically looking for or require text-based challenge alternatives.

ALTCHA videos

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visualCaptcha videos

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visualCaptcha 4.0 by emotionLoop

Category Popularity

0-100% (relative to ALTCHA and visualCaptcha)

ALTCHA

visualCaptcha

SPAM Protection
85 85%
SPAM Protection
15% 15
Captcha
49 49%
Captcha
51% 51
Security & Privacy
65 65%
Security & Privacy
35% 35
Online Services
0 0%
Online Services
100% 100

Questions & Answers

As answered by people managing ALTCHA and visualCaptcha.

What makes your product unique?

ALTCHA's answer

What makes ALTCHA unique is that it is free, open-source and self-hosted, without external services, does not use cookies nor fingerprinting, does not track users, and is fully compliant with GDPR. Unlike other captcha solutions, ALTCHA does not require users to solve puzzles or captchas and uses a proof-of-work mechanism instead.

Why should a person choose your product over its competitors?

ALTCHA's answer

Here are some key reasons why a person should choose ALTCHA over its competitors:

  • Privacy compliance - ALTCHA is fully compliant with privacy regulations like GDPR since it does not use cookies, fingerprinting or track users. This is a major advantage over other captcha solutions.
  • Open source and self-hosted - ALTCHA is free, open source software that can be self-hosted without relying on external services. This gives more control and independence to the user.
  • Accessible design - ALTCHA uses a proof-of-work mechanism instead of puzzles or captchas, making it more friendly and accessible for humans. Captchas can be difficult for some users.
  • Machine compatibility - ALTCHA is designed to also work for machines and APIs, making services accessible for bots and automated systems. Other solutions may not be as compatible.
  • Modern approach - ALTCHA represents a privacy-first, inclusive approach to spam protection as opposed to traditional captcha methods. This future-proofs the solution.
  • Effective spam filtering - In addition to proof-of-work, ALTCHA also offers an effective spam filter module to block sophisticated spam attacks. This provides comprehensive protection.

So in summary, ALTCHA's privacy compliance, open design, accessibility, machine compatibility and modern approach give it clear advantages over competing captcha solutions.

Which are the primary technologies used for building your product?

ALTCHA's answer

JavaScript and Svelte.

How would you describe the primary audience of your product?

ALTCHA's answer

Our primary audience for ALTCHA Forms includes enterprises, medium and small businesses, non-profits, and individuals who need a reliable, secure, and compliant solution for data collection and management. Whether you're a large corporation dealing with extensive regulatory requirements, a small business looking to protect customer and employee data, a non-profit organization managing sensitive information, or an individual seeking robust data security, ALTCHA Forms provides the tools and features necessary to meet your needs. With a focus on compliance, user-friendly design, and advanced security measures, our platform is tailored to support diverse users in navigating complex regulatory landscapes and ensuring data protection.

User comments

Share your experience with using ALTCHA and visualCaptcha. For example, how are they different and which one is better?
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Social recommendations and mentions

Based on our record, ALTCHA should be more popular than visualCaptcha. It has been mentiond 3 times since March 2021. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.

ALTCHA mentions (3)

  • A self-hosted Google reCAPTCHA alternative (we ship it)
    The captcha on orkestr is Altcha. Self-hosted, no third-party JS, no Google, no behavioral tracking. Users don't see a puzzle. There's a single checkbox and a quiet "verifying..." while the browser does some math. About a second, total. - Source: dev.to / 4 months ago
  • Why Proof-of-Work Beats CAPTCHA for Form Protection
    Here's how PoW works for form protection (using the ALTCHA wire format):. - Source: dev.to / 5 months ago
  • Wicketkeeper – privacy-friendly, self-hostable PoW CAPTCHA
    Go based, similar to JS based ALTCHA https://altcha.org/ discussed at https://news.ycombinator.com/item?id=43971068. - Source: Hacker News / 9 months ago

visualCaptcha mentions (1)

  • Technically the Truth!
    As far as I know, they've recently added google captcha as the method of verifying that you're an actual human. I wonder why they choose google's captcha over visualcaptcha for example. Source: about 5 years ago

What are some alternatives?

When comparing ALTCHA and visualCaptcha, you can also consider the following products

reCAPTCHA - reCAPTCHA is a free security service that protects your websites from spam and abuse.

CAPTCHAs.IO - One of the most stable and fast yet affordable captcha solver API web service provider online.

hCaptcha - Do you use a captcha to keep out bots? hCaptcha is a drop-in replacement for reCAPTCHA that earns website owners money and helps companies get their data labeled.

UniqPin - UniqPin is a free for non-commercial use service which destiny improve ability of interfaces detect...

Cloudflare Turnstile - Cloudflare's service for any company to replace CAPTCHAs and deliver a better experience to web visitors.

GSA Captcha Breaker - GSA Captcha Breaker is solving captchas without paying per captcha.

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