Rubular
A Ruby-focused online regular-expression editor for checking patterns against sample text.
About Rubular
Rubular is an online editor for Ruby regular expressions. Users enter a pattern and sample text, and the tool shows which parts of the text match. It is useful for checking and debugging regex patterns before using them in Ruby code.
The page includes a quick reference listing character classes, anchors, quantifiers, and grouping syntax. It supports the i, m, x, and o regex options and provides a permalink for saving a pattern and text. The homepage states that Rubular uses Ruby 2.5.9, so results reflect that version. Questions, comments, and issues can be shared through its @rubular handle. The homepage lists it as made by Michael Lovitt.
Key features
- Tests a regular expression against sample text and shows matches
- Runs patterns using Ruby 2.5.9
- Supports the i, m, x, and o regex options
- Includes a quick reference for character classes, anchors, and quantifiers
- Creates a permalink for a pattern and its test text
- Provides a button to clear the pattern and text fields
Best for: Developers who write or debug regular expressions in Ruby and want to check patterns against sample text.
Good for
- Free to use, according to the listed pricing
- Includes a regex quick reference on the same page as the editor
- Permalink option allows a pattern and text to be shared by link
Watch out for
- Only Ruby 2.5.9 is named, so results may not match other Ruby versions
Rubular at a glance
- Website
- rubular.com
- Category
- Development › Developer Tools
- Type
- Online tool
- Pricing
- Free
- Open source
- Not stated
- Last checked
- Oct 9, 2026 · Online when checked
- Listed
- Oct 9, 2026
Guides for Developer Tools
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Rubular FAQ
Which version of Ruby does Rubular use?
The homepage states that Rubular uses Ruby 2.5.9.
Where can I send questions, comments, or issues?
The homepage asks users to share them at @rubular.
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Tell us and an editor will check it.
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