regex101
freemiumMulti-flavor regex tester with match explanations
PCRE2/JS/Python/Go/Java/.NET. Savable library with account. Privacy caveat: keystrokes sent server-side.
| URL | https://regex101.com |
| Tier | freemium |
| Relevance | high |
| Last active signal | Industry standard, active 2026 |
| Verified alive | yes |
| Category | Tools |