
CodeKitHub
10015.io
Code Beautify JSON Validator
FreeFormatter
CodeBeautify
CodeSwissKnife
A.Tools
Fast developer tools that process your input locally in your browser. No account required.

regular expressions 101
rubular
Expresso
RegEx Generator
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RegExr.com is an online tool to learn, build, and test Regular Expressions.

Which is more popular?
Based on our record, RegExr seems to be more popular. It has been mentioned 368 times since March 2021.
Website, pricing, platforms and company facts side by side.
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| Website | bittycoder.com | regexr.com |
| Pricing | — | |
| Company | 2026 | Startup from the United States |
| Listed in |
What each product offers, as listed by its team.


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


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


Tracking Bitty Coder since Aug 2026.
Use Online Tools: There are many online regex testers and visualizers that can help you see how your patterns match against sample text. These tools often provide explanations for each part of the regex. I personally use... - Source: dev.to / over 1 year ago
However - here it becomes weird - when testing the original regex rule (the first one, without the \u00A0 part) on the same string in an interactive visualiser (https://regexr.com/ for instance), there is a match:. - Source: dev.to / about 2 years ago
Learned regex in the 90's from the Perl documentation, or possibly one of the oreilly perl references. That was a time where printed language references were more convenient than searching the internet. Perl still includes a shell... - Source: Hacker News / over 2 years ago
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