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Free tools, calculators, directories, and reference data for indie hackers, solo developers, and digital creators.

Which is more popular?
Website, pricing, platforms and company facts side by side.
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| Website | gchq.github.io | stack127.com |
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| Platforms | — | |
| Listed in |
In their own words, as submitted to SaaSHub.


No description of CyberChef yet.
stack127 is a toolbox and reference hub for indie hackers, solo developers, and digital creators who build and run projects online. Use its free tools to calculate SaaS metrics such as MRR and churn, estimate Amazon KDP royalties, check domains and DNS, and plan hosting and storage. Its...
What each product offers, as listed by its team.


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Walkthroughs and reviews on video.
Decoding with CyberChef - TryHackMe! Advent of Cyber Day 22
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How often each product is chosen within a category, 0–100% relative to the other.


As answered by people managing CyberChef and stack127.
stack127's answer:
Indie hackers, solo developers, and digital creators who build and run projects online.
stack127's answer:
stack127 brings SaaS metrics, Amazon KDP calculations, platform fees, domains, DNS, hosting, and software directories together for indie hackers, solo developers, and digital creators.
stack127's answer:
Use stack127 for free tools and references across practical project work, including SaaS metrics, Amazon KDP royalties, platform fees, domains, DNS, hosting, and software discovery. Most tools are open source through stack127labs on GitHub.
stack127's answer:
I built stack127 while working on my own projects. I kept needing practical tools and clear references for the same questions: SaaS metrics, Amazon KDP royalties, domain records, storage, and platform fees. stack127 brings those tools and resources together so other indie hackers, solo developers, and digital creators can use them too. Most of the tools are open source through stack127labs on GitHub.
stack127's answer:
Next.js, React and TypeScript, with PostgreSQL through Supabase. The static frontend runs on Cloudflare, and the API runs in Docker on OVH.
Share your experience with using CyberChef and stack127. For example, how are they different and which one is better?
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