FormatJS vs i18next
No clear leader: i18next (56.8) and FormatJS (56.6) are within the 5-point margin; treat as a tie. The attribute-by-attribute breakdown below, with a source and date on every value, is the honest way to compare them.
Capabilities
Feature-by-feature on the axes that matter for localization i18n. “-” means undocumented, not absent.
What each one is
The product in its own terms, so the numbers below have context.
FormatJS
A monorepo hosting FormatJS libraries, with react-intl as a primary component. Provides tools for implementing internationalization and localization functionality in JavaScript applications.
i18next
An internationalization framework that provides core translation features including pluralization rules and contextual translations. Works independently or with optional management services for larger teams.
Pricing
List pricing as published by each vendor, with the date we read it. Always verify at the source before you buy.
FormatJS
Pricing not documented yet.
i18next
Open source library. Optional paid service (Locize) available for translation management.
Platform & deployment
Where each product runs and how it can be hosted. A dash means undocumented, not unsupported.
Integrations
What each product connects to. Counts come from the vendor's own integration directory where one exists.
FormatJS
Not documented yet.
i18next
- Locize
- inlang Paraglide
FormatJS or i18next: which one depends on you
A composite score cannot know your constraints. Describe them and both get re-weighted against what you actually need, with the evidence behind every position.
Free to run, no account needed to start. How the evaluation works
Comparison generated from independently-sourced facts. Every value links to its source and retrieval date. See the method.