# PCRE2 vs RegExr

| Attribute | PCRE2 | RegExr |
|---|---|---|
| **Vioscale score** | 44.4 (27% (low)) | 42.4 (19% (low)) |
| activity.commits_last_30d | 33 | 0 |
| adoption.dependent_repos | 129 | - |
| adoption.github_stars | 1,341 | 10,353 |
| deployment.options | `{"self_hosted":true}` | `{"cloud":true,"self_hosted":true}` |
| description.long | A free regular expression matching library that implements Perl 5 syntax with extensive Unicode and character encoding support. It offers both traditional backtracking and JIT-compiled matching engines, available through native and POSIX-compatible APIs. | A web-based regex editor with real-time pattern matching feedback, supporting both JavaScript and PCRE flavors. Includes educational references, testing suites, community pattern sharing, and analysis tools for expressions and replacements. |
| integrations.count | 2 | - |
| integrations.list | `[{"name":"Exim"},{"name":"Nginx"}]` | - |
| language.primary | C | JavaScript |
| license.spdx | - | GPL-3.0 |
| platform.support | `{"cli":true,"mac":true,"linux":true,"windows":true}` | `{"web":true}` |
| pricing | `{"type":"open_source","freeTier":true,"sourceUrl":"https://www.pcre.org/","retrievedAt":"2026-08-19T21:07:09.586Z"}` | `{"type":"open_source","freeTier":true,"sourceUrl":"https://regexr.com/","retrievedAt":"2026-08-19T21:11:43.370Z"}` |
| pricing.free_tier | yes | yes |
| pricing.model | commercial | commercial |
| pricing.price_level | free | free |
| release.cadence_days | 50 | 16 |
| release.history | `[{"url":"https://github.com/PCRE2Project/pcre2/releases/tag/pcre2-10.48-RC1","date":"2026-08-25T14:44:44Z","type":"prerelease","version":"pcre2-10.48-RC1"},{"url":"https://github.com/PCRE2Project/pcre2/releases/tag/pcre2-10.47","date":"2025-10-21T09:52:48Z","type":"stable","version":"pcre2-10.47"},{"url":"https://github.com/PCRE2Project/pcre2/releases/tag/pcre2-10.46","date":"2025-08-27T16:45:55Z","type":"stable","version":"pcre2-10.46"},{"url":"https://github.com/PCRE2Project/pcre2/releases/tag/pcre2-10.45","date":"2025-02-05T09:09:01Z","type":"stable","version":"pcre2-10.45"},{"url":"https://github.com/PCRE2Project/pcre2/releases/tag/pcre2-10.45-RC1","date":"2024-12-27T07:53:11Z","type":"prerelease","version":"pcre2-10.45-RC1"},{"url":"https://github.com/PCRE2Project/pcre2/releases/tag/pcre2-10.44","date":"2024-06-07T14:13:37Z","type":"stable","version":"pcre2-10.44"},{"url":"https://github.com/PCRE2Project/pcre2/releases/tag/pcre2-10.43","date":"2024-02-16T17:15:57Z","type":"stable","version":"pcre2-10.43"},{"url":"https://github.com/PCRE2Project/pcre2/releases/tag/pcre2-10.43-RC1","date":"2023-12-28T16:41:04Z","type":"prerelease","version":"pcre2-10.43-RC1"},{"url":"https://github.com/PCRE2Project/pcre2/releases/tag/pcre2-10.42","date":"2022-12-12T17:24:44Z","type":"stable","version":"pcre2-10.42"},{"url":"https://github.com/PCRE2Project/pcre2/releases/tag/pcre2-10.41","date":"2022-12-06T17:10:13Z","type":"stable","version":"pcre2-10.41"},{"url":"https://github.com/PCRE2Project/pcre2/releases/tag/pcre2-10.40","date":"2022-04-15T16:05:35Z","type":"stable","version":"pcre2-10.40"},{"url":"https://github.com/PCRE2Project/pcre2/releases/tag/pcre2-10.39","date":"2021-10-29T16:16:41Z","type":"stable","version":"pcre2-10.39"},{"url":"https://github.com/PCRE2Project/pcre2/releases/tag/pcre2-10.38","date":"2021-10-01T15:53:58Z","type":"stable","version":"pcre2-10.38"},{"url":"https://github.com/PCRE2Project/pcre2/releases/tag/pcre2-10.38-RC1","date":"2021-08-31T16:30:14Z","type":"prerelease","version":"pcre2-10.38-RC1"},{"url":"https://github.com/PCRE2Project/pcre2/releases/tag/pcre2-10.37","date":"2021-08-22T10:52:04Z","type":"stable","version":"pcre2-10.37"},{"url":"https://github.com/PCRE2Project/pcre2/releases/tag/pcre2-10.36","date":"2022-01-24T14:14:28Z","type":"stable","version":"pcre2-10.36"},{"url":"https://github.com/PCRE2Project/pcre2/releases/tag/pcre2-10.35","date":"2022-01-24T14:17:46Z","type":"stable","version":"pcre2-10.35"},{"url":"https://github.com/PCRE2Project/pcre2/releases/tag/pcre2-10.34","date":"2022-01-25T16:23:42Z","type":"stable","version":"pcre2-10.34"},{"url":"https://github.com/PCRE2Project/pcre2/releases/tag/pcre2-10.33","date":"2022-01-25T16:25:27Z","type":"stable","version":"pcre2-10.33"},{"url":"https://github.com/PCRE2Project/pcre2/releases/tag/pcre2-10.32","date":"2022-01-25T16:26:41Z","type":"stable","version":"pcre2-10.32"}]` | `[{"url":"https://github.com/gskinner/regexr/releases/tag/3.6.1","date":"2019-03-19T19:52:32Z","type":"stable","version":"3.6.1"},{"url":"https://github.com/gskinner/regexr/releases/tag/3.6.0","date":"2019-03-16T15:42:52Z","type":"stable","version":"3.6.0"},{"url":"https://github.com/gskinner/regexr/releases/tag/3.5.5","date":"2019-02-27T12:28:02Z","type":"stable","version":"3.5.5"},{"url":"https://github.com/gskinner/regexr/releases/tag/3.5.4","date":"2019-02-26T15:39:20Z","type":"stable","version":"3.5.4"},{"url":"https://github.com/gskinner/regexr/releases/tag/3.5.3","date":"2018-11-02T18:59:22Z","type":"stable","version":"3.5.3"},{"url":"https://github.com/gskinner/regexr/releases/tag/3.5.2","date":"2018-10-05T17:31:39Z","type":"stable","version":"3.5.2"},{"url":"https://github.com/gskinner/regexr/releases/tag/3.5","date":"2018-09-11T22:30:23Z","type":"stable","version":"3.5"},{"url":"https://github.com/gskinner/regexr/releases/tag/3.4","date":"2018-07-04T17:50:49Z","type":"stable","version":"3.4"},{"url":"https://github.com/gskinner/regexr/releases/tag/3.3","date":"2018-06-18T22:10:38Z","type":"stable","version":"3.3"},{"url":"https://github.com/gskinner/regexr/releases/tag/3.2.1","date":"2018-06-13T17:46:08Z","type":"stable","version":"3.2.1"},{"url":"https://github.com/gskinner/regexr/releases/tag/3.2","date":"2018-06-11T17:56:39Z","type":"stable","version":"3.2"}]` |
| security.scorecard | - | 2 |
| security.vulnerabilities | `{"count":0,"source":"https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=conda&package_name=pcre2&per_page=100","last_12m":0,"max_severity":null}` | - |

## Capabilities (Regex Tools)

| Capability | PCRE2 | RegExr |
|---|:--:|:--:|
| **Capabilities** |  |  |
| Redos resistant | - | - |
| Lookaround support | - | - |
| Backreferences | - | - |
| Unicode property escapes | - | - |
| Named captures | - | - |
| Multi pattern matching | - | - |
| Interface type | - | - |
| Visualization | - | - |
| Code generation | - | - |

*Source: Vioscale. Generated 2026-09-01T14:40:47.123Z. "-" = undocumented, not absent.*