
DevTools Advanced
FullStackToolkit
DevFinanceTools
JSON Formatter & Validator
AllDevToolsHub
Boop
DeveloperTools.Tech
120 free browser-based developer utilities. No sign-up required.
Qalculate!
SpeedCrunch
SpeQ Mathematics
NumWorks
Calcbot for Apple Watch
Numi App
Soulver
Do maths like a normal person.
Which is more popular?
Based on our record, NaSC seems to be more popular. It has been mentioned 1 time since March 2021.
Website, pricing, platforms and company facts side by side.
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NSC
NaSC
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|---|---|---|
| Website | devtoolstack.io | github.com |
| Pricing | — | |
| Listed in |
What each product offers, as listed by its team.

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

No analysis of DeveloperToolStack yet.
Overall verdict
Why this product is good
Recommended for
Walkthroughs and reviews on video.
No DeveloperToolStack videos yet. You could help us improve this page by suggesting one.
NASC CFI Review 1
More videos
How often each product is chosen within a category, 0–100% relative to the other.

Share your experience with using DeveloperToolStack and NaSC. For example, how are they different and which one is better?
Recommendations tracked on public social media and blogs since March 2021.

Tracking DeveloperToolStack since Aug 2026.
I'm a huge fan of assistive note pads. I wish the one I use was more stable and supported multiple files and more solvers: https://parnold-x.github.io/nasc/ Hopefully more tools like this and the OP come out. - Source: Hacker News / about 5 years ago
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Free, no-signup developer tools for technical SEO: robots.txt, sitemap.xml and .htaccess generators, plus practical guides. Everything runs in your browser.
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SpeedCrunch. SpeedCrunch is a high-precision scientific calculator featuring a fast, keyboard-driven user interface. It is free and open-source software, licensed under the GPL. Download Documentation Donate .
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Free, no-signup calculators for the money side of building software and freelancing
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SpeQ is a small, extensive mathematics program with a simple, intuitive interface.
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