ALTCHA's answer

JavaScript and Svelte.

mosparo's answer:

• PHP
• Symfony

mosparo's answer:

Our audience is everybody with a website and a form on the website. Spam bots don't care about what kind of form you have; they like to spam you anyway.

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.

mosparo's answer:

mosparo is

• Free to use (no license cost ever)
• Accessible (the protection method in your form is fully accessible)
• Self-hosted (you have full control of the setup and the availability of the system)
• Data-saving (mosparo stores only the information that the user entered in the form. The data is stored encrypted and for 14 days only)
• Customizable design (the mosparo box in your form can be fully adjusted to your design)

and a lot more...

mosparo's answer:

mosparo was founded in May 2021. We needed spam protection for a form on the homepage of a website. Because of data privacy, we wanted a self-hosted solution. So we started to search for spam protection solutions. While there are some solutions, a lot of these solutions use either a puzzle to recognize humans or are built into a system and are not available everywhere.

After some more research, we found that these puzzle solutions do not work for people with disabilities and are, therefore, not accessible. Today, every website should be accessible – but when you have a form, you must decide between accessibility, data privacy, and spam.

Because of this experience, we started to think about a new spam protection system that solves the problems with accessibility and data privacy and is free to use and installable on every regular web hosting.

mosparo – the modern spam protection – was born.

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.

mosparo's answer:

The combination of a self-hosted, accessible, and free-to-use solution is not available from other software.

There are a lot of hosted solutions. Some of them are accessible, some not. Some are free, some not. There are also a lot of self-hosted solutions, but they usually use non-accessible methods like guessing characters or icons.

A solution that is accessible, free-to-use, self-hosted, and data-saving is pretty unique.