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Keycloak
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ZITADEL
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Hanko
AWS Identity and Access Management
Auth0
Single Sign-On for Your Self-Hosted Universe ๐โโฌ๐

Which is more popular?
Website, pricing, platforms and company facts side by side.
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VA
VoidAuth
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|---|---|---|
| Website | lotoftools.org | voidauth.app |
| Pricing | โ | |
| Platforms | โ | |
| Company | Startup from Ukraine ยท 1 - 9 employees ยท 2026 | โ |
| Listed in |
In their own words, as submitted to SaaSHub.

LotofTools is a growing collection of free online calculators and tools built for startup founders, marketers, and developers. Every tool runs entirely in your browser -no data leaves your device, no account needed, no ads. Unlike typical online calculators that give you one number after clicking...
No description of VoidAuth yet.
What each product offers, as listed by its team.

Possible disadvantages
An editorial look at what each product does well and who it suits.

Overall verdict
Why this product is good
Recommended for
Overall verdict
Why this product is good
Recommended for
How often each product is chosen within a category, 0โ100% relative to the other.

As answered by people managing LotofTools and VoidAuth.
LotofTools's answer
LotofTools is a free collection of 1000+ instant online tools -all running 100% client-side in the browser with no signups, no data collection, and no backend processing.
Key differentiators:
LotofTools's answer
Most online tool sites feel like they were built in 2010 -ad-heavy, slow, ugly, and requiring you to click "Calculate" every time. LotofTools is a modern alternative built for how people actually work today:
LotofTools's answer
Startup founders, digital marketers, and developers who need quick, reliable online tools without the friction of signups, ads, or sending their data to a server. Secondary audiences include students, freelancers, and anyone who regularly Googles "X calculator" or "Y converter" and wants a faster, cleaner experience.
LotofTools's answer
It started when I Googled "percentage calculator" for the 500th time and landed on a site that looked like it was designed during the dial-up era -complete with 3 pop-up ads and a "Calculate" button that took 4 seconds to load a single number. I thought: "There's no way it should be this painful to divide two numbers." So I built one clean tool. Then another. Then I couldn't stop. Now im planning to cover 1000+ tools and counting - basically my revenge against every ugly, ad-infested calculator site that ever wasted my time.
LotofTools's answer
Next.js, React, TypeScript, Tailwind CSS, and Chart.js. All tools run 100% client-side in the browser - no backend, no database, no server-side processing.
LotofTools's answer
LotofTools is a free, open-access product - we don't have traditional "customers" with contracts. Our users are thousands of individual founders, marketers, developers, and students who discover our tools organically through Google search every day. We're built for the long tail - the person who Googles "burn rate calculator" at 2 AM before their board meeting.
Share your experience with using LotofTools and VoidAuth. For example, how are they different and which one is better?
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