i18next goes beyond just providing the standard i18n features such as (plurals, context, interpolation, format). It provides you with a complete solution to localize your product from web to mobile and desktop.
The i18next-community created integrations for frontend-frameworks such as React, AngularJS, Vue.js and many more.
But this is not where it ends. You can also use i18next with Node.js, PHP, iOS, Android and other platforms.
Most frameworks leave it to you how translations are being loaded. You are responsible to detect the user language, to load the translations and push them into the framework.
i18next takes care of these issues for you. We provide you with plugins to:
detect the user language
load the translations
optionally cache the translations
extension, by using post-processing - e.g. to enable sprintf support
i18next comes with strong defaults but it is flexible enough to fulfill custom needs.
Use moment.js over intl for date formatting?
Prefer different pre- and suffixes for interpolation?
Like gettext style keys better?
i18next has you covered!
The framework was built with scalability in mind. For smaller projects, having a single file with all the translation might work, but for larger projects this approach quickly breaks down. i18next gives you the option to separate translations into multiple files and to load them on demand.
There are tons of modules built for and around i18next: from extracting translations from your code over bundling translations using webpack, to converting gettext, CSV and RESX to JSON.
Through locize.com, i18next even provides its own translation management tool: localization as a service.