
RegExr
RegexBuddy
regular expressions 101
Expresso
Regex Hero
RegexMagic
Regulex
Patterns is a simple yet powerful tool for working with regular expressions.

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
Which is more popular?
Website, pricing, platforms and company facts side by side.
|
|
|
|
|---|---|---|
| Website | krillapps.com | devfinancetools.com |
| Pricing | — | |
| Company | — | 2026 |
| Listed in |
In their own words, as submitted to SaaSHub.


No description of Patterns yet.
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...
What each product offers, as listed by its team.


Possible disadvantages
How often each product is chosen within a category, 0–100% relative to the other.


Share your experience with using Patterns and DevFinanceTools. For example, how are they different and which one is better?
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Helping you make rational decisions, one calculation at a time.
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RegexBuddy is your perfect companion for working with regular expressions.
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Online calculator for quick calculations, along with a large collection of calculators on math, finance, fitness, and more, each with related in-depth information.
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Extensive regex tester and debugger with highlighting for PHP, PCRE, Python and JavaScript.
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Should you build an internal tool? Or just buy it?
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