
Omni Calculator
calculator.net
Build vs. Buy Calculator
DeveloperToolStack
DevNestTools
DevTools Advanced
DevTools.fit
Free, no-signup calculators for the money side of building software and freelancing

Atlassian Design
Facebook Design
Checklist Design
Laws of UX
Product Disrupt
Colorbox.io
Facebook Design Resources
An open source repository of design principles and methods

Which is more popular?
Based on our record, Design Principles seems to be more popular. It has been mentioned 9 times since March 2021.
Website, pricing, platforms and company facts side by side.
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| Website | devfinancetools.com | principles.design |
| Pricing | — | |
| Company | 2026 | — |
| Listed in |
In their own words, as submitted to SaaSHub.


DevFinanceTools is a collection of free, no-signup calculators for the money side of building software and freelancing. Everything runs in your browser — no account, no tracking beyond basic page-view analytics — and every tool shows its formulas and benchmarks so you can check the maths...
No description of Design Principles 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.


No analysis of DevFinanceTools yet.
Overall verdict
Why this product is good
Recommended for
Walkthroughs and reviews on video.
No DevFinanceTools videos yet. You could help us improve this page by suggesting one.
GOTO 2016 • Secure by Design – the Architect's Guide to Security Design Principles • Eoin Woods
How often each product is chosen within a category, 0–100% relative to the other.


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


Tracking DevFinanceTools since Aug 2026.
Your comment is an interesting one, and I can see how it’s be helpful for some folks who are just setting out in their careers. I was asking not about style guides, but the nuanced differences between heuristics, such as NNg’s, and... Source: almost 4 years ago
Principle Design is a Free Resource to learn more about designing better user interfaces and logos for your business. Access 195+ Examples and 1445 principles to learn more about design. (no-signup). Source: about 4 years ago
Http://styleguides.io/ and https://principles.design/ are worth keeping an eye on, especially for trends that come up and to see what the industry is up to. Source: about 4 years ago
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Should you build an internal tool? Or just buy it?
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The best UI and UX practices for production ready design.
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