RegExr VS RegEx101

Compare RegExr vs RegEx101 and see what are their differences.

RegExr

RegExr is a HTML/JS based tool for creating, testing, and learning about Regular Expressions. (by gskinner)

RegEx101

This repository is currently only used for issue tracking for www.regex101.com (by firasdib)
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RegExr RegEx101
579 5
9,508 3,145
- -
0.0 1.7
1 day ago about 1 month ago
JavaScript
GNU General Public License v3.0 only -
The number of mentions indicates the total number of mentions that we've tracked plus the number of user suggested alternatives.
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.

RegExr

Posts with mentions or reviews of RegExr. We have used some of these posts to build our list of alternatives and similar projects. The last one was on 2023-10-10.

RegEx101

Posts with mentions or reviews of RegEx101. We have used some of these posts to build our list of alternatives and similar projects. The last one was on 2023-07-09.
  • How small is the smallest .NET Hello World binary?
    8 projects | news.ycombinator.com | 9 Jul 2023
    > I wonder if this could be used to make C# webassembly more viable.

    You might enjoy reading this GitHub thread [0] where the community contributed a WASM library wrapping the C# regex code so that regex101.com could have a "C# mode". Lots of nerd sniping about reducing the payload size.

    (There's also another thread [1] discussing the minification of a rust version of that same regex101 wasm library to provide a "rust mode" using @burntsushi's regex crate.)

    [0]: https://github.com/firasdib/Regex101/issues/156

    [1]: https://github.com/firasdib/Regex101/issues/1208

  • [Media] Regex101 now supports Rust!
    5 projects | /r/rust | 3 Apr 2023
    That’s correct, compiled to WASM. You can see all the nitty gritty here https://github.com/firasdib/Regex101/issues/1208
  • Regex101.com needs help getting a small Rust WASM binary
    4 projects | /r/rust | 18 Nov 2022
    Excellent comparisons. ~150KB without unicode would make Rust the smallest wasm on Regex101 as far as I can tell. pcrelib comes in at 198KB. Personally, I think ~400KB with unicode features is just fine for .wasm size. The heaviest flavor C# is around 4.91MB and was added back in February of this year. They also had a performance comparison which would also be interesting.
    4 projects | /r/rust | 18 Nov 2022
    The maintainer of the website is open to adding a Rust flavor, but it seems like there has been some difficulty getting the size of the generated wasm down to ideally <500kB (rough requirement set by the author). Current sizes are closer to 3 MB: link to the discussion: https://github.com/firasdib/Regex101/issues/1208
  • Want to help bring Ruby support to Regex101 (online regexp suite)?
    2 projects | /r/ruby | 2 Jul 2022

What are some alternatives?

When comparing RegExr and RegEx101 you can also consider the following projects:

RegExpBuilder

Regexly - WYSIWYG Regex playground for those who JavaScript

Visual Studio Code - Visual Studio Code

CyberChef - The Cyber Swiss Army Knife - a web app for encryption, encoding, compression and data analysis

self-hosted - Sentry, feature-complete and packaged up for low-volume deployments and proofs-of-concept

web - The source code for the Standard Ebooks website.

Codiad - Web Based, Cloud IDE

regex-generator - Generate regular expressions from sample texts.

openlibrary - One webpage for every book ever published!

upm - ⠕ Universal Package Manager - Python, Node.js, Ruby, Emacs Lisp.