
RegExr
rubular
Regex Crossword
Expresso
RegEx Generator
RegexOne
RegexPlanet Ruby
Extensive regex tester and debugger with highlighting for PHP, PCRE, Python and JavaScript.

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.

Which is more popular?
Based on our record, regular expressions 101 seems to be more popular. It has been mentioned 893 times since March 2021.
Website, pricing, platforms and company facts side by side.
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| Website | regex101.com | bittycoder.com |
| Company | — | 2026 |
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What each product offers, as listed by its team.


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


Overall verdict
Why this product is good
Recommended for
No analysis of Bitty Coder yet.
How often each product is chosen within a category, 0–100% relative to the other.


Share your experience with using regular expressions 101 and Bitty Coder. For example, how are they different and which one is better?
Recommendations tracked on public social media and blogs since March 2021.


Regex101 — A great resource for creating, testing, and understanding regular expressions. - Source: dev.to / 10 days ago
Regex101 is the tool I'd point anyone to. Paste a pattern and some test text, and it highlights matches and explains every token in plain English on the side. Pick the right flavor in the left menu (PCRE, JavaScript, Python, Go and... - Source: dev.to / 15 days ago
Time to take care of that regular expression that acts as the word separator. With some experimentation (the regex101 web site is good for that), we arrived at this:. - Source: dev.to / 5 months ago
Tracking Bitty Coder since Aug 2026.
When comparing regular expressions 101 and Bitty Coder, you can also consider the following products.

RegExr.com is an online tool to learn, build, and test Regular Expressions.
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A ruby based regular expression editor
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10015.io is an all-in-one toolbox offering many tools from various categories.
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Welcome to the fantastic world of nerdy regex fun!
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Code Beauty’s JSON Validator or JSON Lint is easy to use tool to copy, paste and validate JSON data.
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