Free
regex101
Open SourceRegex
The most popular regex tester and debugger with live explanation.
regextesterdebuggerexplanation
Discover the 4 best open-source tools for regex. Community-driven, transparent source code with permissive licenses. Curated, compared, and updated for developers.
| Tool | Pricing | Platforms | Top Strength | Link |
|---|---|---|---|---|
| regex101 | free | web | The most popular regex tester and debugger with live explanation. | Details → |
| RegExr | free | web | Online regex tester with reference, cheatsheet and community patterns. | Details → |
| Regexper | free | web | Visualize regular expressions as railroad diagrams. | Details → |
| Regex Generator | free | web | Generate regular expressions from sample text matches. | Details → |
Regex
The most popular regex tester and debugger with live explanation.
Regex
Online regex tester with reference, cheatsheet and community patterns.
Regex
Visualize regular expressions as railroad diagrams.
Regex
Generate regular expressions from sample text matches.