Programiz offers free online compilers and code editors alongside programming tutorials for languages including Python, JavaScript, SQL, and C++.
RegexLearn
RegexLearn teaches regular expressions through interactive lessons and practice at different levels.
About RegexLearn
RegexLearn is a web tool for learning regular expressions, which are sequences of characters that describe patterns and are used to find, match and edit data. Its lessons move step by step from zero to advanced level and include examples and tutorials. The Cheatsheet shows regex patterns and symbols on one page, and the Playground lets you build, validate and test your own patterns. The site notes that regex can be used in programming languages such as Python, SQL, JavaScript and R.
Key features
- Lessons from zero to advanced level
- Cheatsheet of regex patterns and symbols on one page
- Playground to build, validate and test patterns
- Examples and tutorials on regex syntax rules
Best for: People who want to learn, practice or test regular expressions.
Good for
- Open-source project that welcomes community contributions.
Watch out for
- Practice section is listed as coming soon.
RegexLearn at a glance
- Website
- regexlearn.com
- Category
- Education & Learning › Learn to Code
- Type
- Online tool
- Pricing
- Free
- Platforms
- Web
- Details verified
- Oct 22, 2026 · Official source
- Open source
- Yes · Source code
- Language
- English
- Last checked
- Oct 5, 2026 · Online when checked
- Listed
- Oct 5, 2026
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