
Which is more popular?
Website, pricing, platforms and company facts side by side.
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|---|---|---|
| Website | mosparo.io | nullstack.app |
| Pricing | ||
| Platforms | — | |
| Company | 2023 | — |
| Listed in |
In their own words, as submitted to SaaSHub.


What is mosparo? mosparo is the modern solution for protecting your online forms from spam. The protection method is quite simple: mosparo blocks spam using rules matching the form’s data. The detection method is comparable to an e-mail spam filter. Usable by everybody This modern spam protection...
No description of Nullstack yet.
What each product offers, as listed by its team.


Possible disadvantages
Walkthroughs and reviews on video.
A short explanation about mosparo and how it works.
Full-stack with Nullstack - Part 3
More videos
How often each product is chosen within a category, 0–100% relative to the other.


As answered by people managing mosparo and Nullstack.
mosparo's answer
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.
mosparo's answer
mosparo is
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.
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.
Share your experience with using mosparo and Nullstack. For example, how are they different and which one is better?
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