# FormatJS vs ICU

| Attribute | FormatJS | ICU |
|---|---|---|
| **Vioscale score** | 64.8 (10% (low)) | 63.6 (24% (low)) |
| activity.commits_last_30d | 100 | 38 |
| adoption.dependent_repos | 57,947 | 6,271 |
| adoption.github_stars | 14,743 | 3,586 |
| description.long | - | ICU is a widely-used open-source library that provides Unicode text handling, internationalization services, and localization support for C, C++, and Java applications. It fills gaps in platform-native Unicode support, enabling portable text processing across operating systems and programming environments. |
| integrations.count | - | 20 |
| integrations.list | - | `[{"name":"Adobe"},{"name":"Amazon (Kindle)"},{"name":"Apache"},{"name":"Apple"},{"name":"eBay"},{"name":"Google"},{"name":"Chrome"},{"name":"Android"},{"name":"Google Maps"},{"name":"Google Analytics"},{"name":"Gmail"},{"name":"Facebook (HHVM)"},{"name":"Microsoft"},{"name":"Eclipse"},{"name":"FreeBSD"},{"name":"Debian Linux"},{"name":"CouchDB"},{"name":"Firebird RDBMS"},{"name":"ESRI"},{"name":"CERN"}]` |
| language.primary | TypeScript | C++ |
| market.availability | - | `{"primaryMarkets":[],"availabilityScope":"global","availableCountries":[],"notAvailableCountries":[]}` |
| platform.support | `{"cli":true}` | `{"cli":true,"ios":true,"mac":true,"web":true,"linux":true,"android":true,"windows":true}` |
| pricing | - | `{"type":"open_source","sourceUrl":"https://icu.unicode.org","retrievedAt":"2026-08-19T14:45:32.725Z"}` |
| pricing.model | commercial | commercial |
| pricing.price_level | - | free |
| release.cadence_days | - | 44 |
| release.history | `[{"url":"https://github.com/formatjs/formatjs/releases/tag/react-intl%4010.1.23","date":"2026-08-23T03:06:40Z","type":"stable","version":"react-intl@10.1.23"},{"url":"https://github.com/formatjs/formatjs/releases/tag/formatjs_cli_v1.4.2","date":"2026-08-23T03:06:41Z","type":"stable","version":"formatjs_cli_v1.4.2"},{"url":"https://github.com/formatjs/formatjs/releases/tag/eslint-plugin-formatjs%406.6.0","date":"2026-08-23T03:06:39Z","type":"stable","version":"eslint-plugin-formatjs@6.6.0"},{"url":"https://github.com/formatjs/formatjs/releases/tag/%40formatjs/cli%406.16.20","date":"2026-08-23T03:06:38Z","type":"stable","version":"@formatjs/cli@6.16.20"},{"url":"https://github.com/formatjs/formatjs/releases/tag/%40formatjs/cli-native-win32-x64%401.1.15","date":"2026-08-23T03:06:37Z","type":"stable","version":"@formatjs/cli-native-win32-x64@1.1.15"},{"url":"https://github.com/formatjs/formatjs/releases/tag/%40formatjs/cli-native-linux-x64%401.1.14","date":"2026-08-23T03:06:35Z","type":"stable","version":"@formatjs/cli-native-linux-x64@1.1.14"},{"url":"https://github.com/formatjs/formatjs/releases/tag/%40formatjs/cli-native-linux-x64-musl%401.0.12","date":"2026-08-23T03:06:36Z","type":"stable","version":"@formatjs/cli-native-linux-x64-musl@1.0.12"},{"url":"https://github.com/formatjs/formatjs/releases/tag/%40formatjs/cli-native-linux-arm64%401.2.14","date":"2026-08-23T03:06:33Z","type":"stable","version":"@formatjs/cli-native-linux-arm64@1.2.14"},{"url":"https://github.com/formatjs/formatjs/releases/tag/%40formatjs/cli-native-linux-arm64-musl%401.0.12","date":"2026-08-23T03:06:34Z","type":"stable","version":"@formatjs/cli-native-linux-arm64-musl@1.0.12"},{"url":"https://github.com/formatjs/formatjs/releases/tag/%40formatjs/cli-native-darwin-arm64%401.1.14","date":"2026-08-23T03:06:32Z","type":"stable","version":"@formatjs/cli-native-darwin-arm64@1.1.14"},{"url":"https://github.com/formatjs/formatjs/releases/tag/%40formatjs/cli-lib%409.0.6","date":"2026-08-23T03:06:30Z","type":"stable","version":"@formatjs/cli-lib@9.0.6"},{"url":"https://github.com/formatjs/formatjs/releases/tag/formatjs_cli_v1.4.1","date":"2026-08-18T14:14:54Z","type":"stable","version":"formatjs_cli_v1.4.1"},{"url":"https://github.com/formatjs/formatjs/releases/tag/%40formatjs/cli%406.16.19","date":"2026-08-18T14:14:53Z","type":"stable","version":"@formatjs/cli@6.16.19"},{"url":"https://github.com/formatjs/formatjs/releases/tag/%40formatjs/cli-native-win32-x64%401.1.14","date":"2026-08-18T14:14:52Z","type":"stable","version":"@formatjs/cli-native-win32-x64@1.1.14"},{"url":"https://github.com/formatjs/formatjs/releases/tag/%40formatjs/cli-native-linux-x64%401.1.13","date":"2026-08-18T14:14:49Z","type":"stable","version":"@formatjs/cli-native-linux-x64@1.1.13"},{"url":"https://github.com/formatjs/formatjs/releases/tag/%40formatjs/cli-native-linux-x64-musl%401.0.11","date":"2026-08-18T14:14:50Z","type":"stable","version":"@formatjs/cli-native-linux-x64-musl@1.0.11"},{"url":"https://github.com/formatjs/formatjs/releases/tag/%40formatjs/cli-native-linux-arm64%401.2.13","date":"2026-08-18T14:14:47Z","type":"stable","version":"@formatjs/cli-native-linux-arm64@1.2.13"},{"url":"https://github.com/formatjs/formatjs/releases/tag/%40formatjs/cli-native-linux-arm64-musl%401.0.11","date":"2026-08-18T14:14:48Z","type":"stable","version":"@formatjs/cli-native-linux-arm64-musl@1.0.11"},{"url":"https://github.com/formatjs/formatjs/releases/tag/%40formatjs/cli-native-darwin-arm64%401.1.13","date":"2026-08-18T14:14:46Z","type":"stable","version":"@formatjs/cli-native-darwin-arm64@1.1.13"},{"url":"https://github.com/formatjs/formatjs/releases/tag/%40formatjs/cli-lib%409.0.5","date":"2026-08-18T14:14:45Z","type":"stable","version":"@formatjs/cli-lib@9.0.5"}]` | `[{"url":"https://github.com/unicode-org/icu/releases/tag/icu4x/2026-07-01/79.x","date":"2026-07-01T09:30:18Z","type":"prerelease","version":"icu4x/2026-07-01/79.x"},{"url":"https://github.com/unicode-org/icu/releases/tag/release-78.3","date":"2026-03-17T20:23:47Z","type":"stable","version":"release-78.3"},{"url":"https://github.com/unicode-org/icu/releases/tag/release-78.2","date":"2026-01-09T00:38:52Z","type":"stable","version":"release-78.2"},{"url":"https://github.com/unicode-org/icu/releases/tag/release-78.1","date":"2025-10-30T17:21:37Z","type":"stable","version":"release-78.1"},{"url":"https://github.com/unicode-org/icu/releases/tag/release-78.1rc","date":"2025-10-03T19:33:43Z","type":"prerelease","version":"release-78.1rc"},{"url":"https://github.com/unicode-org/icu/releases/tag/icu4x/2025-05-21/77.x","date":"2025-05-21T08:57:05Z","type":"prerelease","version":"icu4x/2025-05-21/77.x"},{"url":"https://github.com/unicode-org/icu/releases/tag/icu4x/2025-05-01/77.x","date":"2025-05-01T18:43:02Z","type":"prerelease","version":"icu4x/2025-05-01/77.x"},{"url":"https://github.com/unicode-org/icu/releases/tag/release-77-1","date":"2025-03-13T18:00:27Z","type":"stable","version":"release-77-1"},{"url":"https://github.com/unicode-org/icu/releases/tag/release-77-rc","date":"2025-02-21T21:42:35Z","type":"prerelease","version":"release-77-rc"},{"url":"https://github.com/unicode-org/icu/releases/tag/icu4x/2024-12-16/76.x","date":"2024-12-16T20:27:12Z","type":"prerelease","version":"icu4x/2024-12-16/76.x"},{"url":"https://github.com/unicode-org/icu/releases/tag/release-76-1","date":"2024-10-24T17:22:31Z","type":"stable","version":"release-76-1"},{"url":"https://github.com/unicode-org/icu/releases/tag/release-76-rc","date":"2024-09-30T21:35:03Z","type":"prerelease","version":"release-76-rc"},{"url":"https://github.com/unicode-org/icu/releases/tag/icu4x/2024-05-16/75.x","date":"2024-05-16T23:41:40Z","type":"prerelease","version":"icu4x/2024-05-16/75.x"},{"url":"https://github.com/unicode-org/icu/releases/tag/icu4x/2024-05-03/75.x","date":"2024-05-03T21:18:50Z","type":"prerelease","version":"icu4x/2024-05-03/75.x"},{"url":"https://github.com/unicode-org/icu/releases/tag/release-75-1","date":"2024-04-16T00:57:15Z","type":"stable","version":"release-75-1"},{"url":"https://github.com/unicode-org/icu/releases/tag/release-75-rc","date":"2024-03-29T00:25:41Z","type":"prerelease","version":"release-75-rc"},{"url":"https://github.com/unicode-org/icu/releases/tag/release-74-2","date":"2023-12-11T19:06:58Z","type":"stable","version":"release-74-2"},{"url":"https://github.com/unicode-org/icu/releases/tag/release-74-1","date":"2023-10-27T23:28:23Z","type":"stable","version":"release-74-1"},{"url":"https://github.com/unicode-org/icu/releases/tag/release-74-rc","date":"2023-10-05T21:31:47Z","type":"prerelease","version":"release-74-rc"},{"url":"https://github.com/unicode-org/icu/releases/tag/cldr/2023-09-27","date":"2023-09-27T18:31:26Z","type":"prerelease","version":"cldr/2023-09-27"}]` |
| security.scorecard | 3.8 | 8.9 |
| security.vulnerabilities | `{"count":0,"source":"https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=npm&package_name=react-intl&per_page=100","last_12m":0,"max_severity":null}` | `{"count":0,"source":"https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=maven&package_name=com.ibm.icu%3Aicu4j&per_page=100","last_12m":0,"max_severity":null}` |

## Capabilities (Localization I18N)

| Capability | FormatJS | ICU |
|---|:--:|:--:|
| **Capabilities** |  |  |
| Cldr plural rules | - | - |
| Rtl bidi support | - | - |
| Translation memory | - | - |
| Glossary terminology | - | - |
| In context editing | - | - |
| Ota updates | - | - |
| Self hostable | - | - |
| Managed translation services | - | - |
| Qa checks | - | - |

*Source: Vioscale. Generated 2026-09-01T14:27:09.435Z. "-" = undocumented, not absent.*