# FormatJS vs Project Fluent

| Attribute | FormatJS | Project Fluent |
|---|---|---|
| **vioscaleAI score** | 56.6 (22% (low)) | 37.6 (52% (medium)) |
| activity.commits_last_30d | 100 | 0 |
| adoption.dependent_repos | 57,947 | 0 |
| adoption.github_stars | 14,741 | 1,680 |
| content.faq | - | `[{"answer":"A localization system that enables translations to use the full range of grammatical features in their target language, including proper handling of plurals, gender, dates, times, numbers, and right-to-left text. It is indexed under Localization I18N.","source":"https://projectfluent.org","question":"What is Project Fluent?","confidence":0.6},{"answer":"Project Fluent is open source, so it can be self-hosted and used at no licence cost. It is released under the Apache-2.0 licence. Pricing changes often, so verify at source before relying on it.","source":"https://projectfluent.org","question":"Is Project Fluent free to use?","confidence":0.6},{"answer":"Yes. Project Fluent is published under the Apache-2.0 licence, a permissive licence that generally allows commercial use and modification. Licence terms can change between releases, so verify against the repository for the version you intend to use.","source":"https://github.com/projectfluent/fluent","question":"Is Project Fluent open source?","confidence":0.95}]` |
| description.long | A monorepo hosting FormatJS libraries, with react-intl as a primary component. Provides tools for implementing internationalization and localization functionality in JavaScript applications. | A localization system that enables translations to use the full range of grammatical features in their target language, including proper handling of plurals, gender, dates, times, numbers, and right-to-left text. |
| features.capabilities | - | `{"qa_checks":false,"ota_updates":false,"self_hostable":true,"rtl_bidi_support":true,"cldr_plural_rules":true,"in_context_editing":false,"translation_memory":true,"glossary_terminology":true,"managed_translation_services":false}` |
| language.primary | TypeScript | JavaScript |
| license.spdx | - | Apache-2.0 |
| platform.support | `{"cli":true}` | - |
| pricing | - | `{"type":"open_source","sourceUrl":"https://projectfluent.org","retrievedAt":"2026-08-21T13:20:47.821Z"}` |
| pricing.model | commercial | commercial |
| pricing.price_level | - | free |
| release.cadence_days | - | 59 |
| release.history | `[{"url":"https://github.com/formatjs/formatjs/releases/tag/formatjs_intl_v2.2.0","date":"2026-10-11T03:13:05Z","type":"stable","version":"formatjs_intl_v2.2.0"},{"url":"https://github.com/formatjs/formatjs/releases/tag/formatjs_icu_messageformat_v0.3.0","date":"2026-10-11T03:13:04Z","type":"stable","version":"formatjs_icu_messageformat_v0.3.0"},{"url":"https://github.com/formatjs/formatjs/releases/tag/formatjs_intl_v2.1.0","date":"2026-10-09T12:56:15Z","type":"stable","version":"formatjs_intl_v2.1.0"},{"url":"https://github.com/formatjs/formatjs/releases/tag/formatjs_intl_macros_v1.1.0","date":"2026-10-09T12:56:14Z","type":"stable","version":"formatjs_intl_macros_v1.1.0"},{"url":"https://github.com/formatjs/formatjs/releases/tag/formatjs_icu_messageformat_v0.2.0","date":"2026-10-09T12:56:12Z","type":"stable","version":"formatjs_icu_messageformat_v0.2.0"},{"url":"https://github.com/formatjs/formatjs/releases/tag/formatjs_icu_messageformat_parser_v1.1.0","date":"2026-10-09T12:56:10Z","type":"stable","version":"formatjs_icu_messageformat_parser_v1.1.0"},{"url":"https://github.com/formatjs/formatjs/releases/tag/formatjs_cli_v1.8.1","date":"2026-10-09T12:56:16Z","type":"stable","version":"formatjs_cli_v1.8.1"},{"url":"https://github.com/formatjs/formatjs/releases/tag/%40formatjs/cli%406.16.34","date":"2026-10-09T12:56:09Z","type":"stable","version":"@formatjs/cli@6.16.34"},{"url":"https://github.com/formatjs/formatjs/releases/tag/%40formatjs/cli-native-win32-x64%401.1.29","date":"2026-10-09T12:56:08Z","type":"stable","version":"@formatjs/cli-native-win32-x64@1.1.29"},{"url":"https://github.com/formatjs/formatjs/releases/tag/%40formatjs/cli-native-linux-x64%401.1.28","date":"2026-10-09T12:56:06Z","type":"stable","version":"@formatjs/cli-native-linux-x64@1.1.28"},{"url":"https://github.com/formatjs/formatjs/releases/tag/%40formatjs/cli-native-linux-x64-musl%401.0.26","date":"2026-10-09T12:56:07Z","type":"stable","version":"@formatjs/cli-native-linux-x64-musl@1.0.26"},{"url":"https://github.com/formatjs/formatjs/releases/tag/%40formatjs/cli-native-linux-arm64%401.2.28","date":"2026-10-09T12:56:03Z","type":"stable","version":"@formatjs/cli-native-linux-arm64@1.2.28"},{"url":"https://github.com/formatjs/formatjs/releases/tag/%40formatjs/cli-native-linux-arm64-musl%401.0.26","date":"2026-10-09T12:56:04Z","type":"stable","version":"@formatjs/cli-native-linux-arm64-musl@1.0.26"},{"url":"https://github.com/formatjs/formatjs/releases/tag/%40formatjs/cli-native-darwin-arm64%401.1.28","date":"2026-10-09T12:56:02Z","type":"stable","version":"@formatjs/cli-native-darwin-arm64@1.1.28"},{"url":"https://github.com/formatjs/formatjs/releases/tag/%40formatjs/cli-lib%4010.0.10","date":"2026-10-09T12:56:01Z","type":"stable","version":"@formatjs/cli-lib@10.0.10"},{"url":"https://github.com/formatjs/formatjs/releases/tag/vue-intl%408.1.3","date":"2026-10-05T16:55:54Z","type":"stable","version":"vue-intl@8.1.3"},{"url":"https://github.com/formatjs/formatjs/releases/tag/react-intl%4012.1.4","date":"2026-10-05T16:55:49Z","type":"stable","version":"react-intl@12.1.4"},{"url":"https://github.com/formatjs/formatjs/releases/tag/intl-messageformat%4012.1.3","date":"2026-10-05T16:55:47Z","type":"stable","version":"intl-messageformat@12.1.3"},{"url":"https://github.com/formatjs/formatjs/releases/tag/formatjs_cli_v1.8.0","date":"2026-10-05T16:55:55Z","type":"stable","version":"formatjs_cli_v1.8.0"},{"url":"https://github.com/formatjs/formatjs/releases/tag/eslint-plugin-formatjs%408.1.1","date":"2026-10-05T16:55:43Z","type":"stable","version":"eslint-plugin-formatjs@8.1.1"}]` | `[{"url":"https://github.com/projectfluent/fluent/releases/tag/v1.0.0","date":"2019-04-17T07:18:15Z","type":"stable","version":"v1.0.0"},{"url":"https://github.com/projectfluent/fluent/releases/tag/v0.9.0","date":"2019-03-26T12:55:42Z","type":"prerelease","version":"v0.9.0"},{"url":"https://github.com/projectfluent/fluent/releases/tag/v0.8.0","date":"2018-12-13T14:50:15Z","type":"prerelease","version":"v0.8.0"},{"url":"https://github.com/projectfluent/fluent/releases/tag/v0.7.0","date":"2018-10-15T14:32:25Z","type":"prerelease","version":"v0.7.0"},{"url":"https://github.com/projectfluent/fluent/releases/tag/v0.6.0","date":"2018-07-24T15:30:56Z","type":"prerelease","version":"v0.6.0"},{"url":"https://github.com/projectfluent/fluent/releases/tag/v0.5.0","date":"2018-01-31T18:46:29Z","type":"prerelease","version":"v0.5.0"},{"url":"https://github.com/projectfluent/fluent/releases/tag/v0.4.0","date":"2017-11-14T13:06:28Z","type":"prerelease","version":"v0.4.0"},{"url":"https://github.com/projectfluent/fluent/releases/tag/v0.3.0","date":"2017-10-18T10:17:03Z","type":"prerelease","version":"v0.3.0"},{"url":"https://github.com/projectfluent/fluent/releases/tag/v0.2.0","date":"2017-10-18T10:16:33Z","type":"prerelease","version":"v0.2.0"},{"url":"https://github.com/projectfluent/fluent/releases/tag/v0.1.0","date":"2017-10-18T10:15:50Z","type":"prerelease","version":"v0.1.0"}]` |
| security.scorecard | 4.3 | 3.7 |
| 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=go&package_name=github.com%2Fprojectfluent%2Ffluent&per_page=100","last_12m":0,"max_severity":null}` |

## Capabilities (Localization I18N)

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

*Source: vioscaleAI. Generated 2026-10-15T21:47:38.895Z. "-" = undocumented, not absent.*