Project Fluent

Innovative
Natural-sounding translations with genders and grammatical cases when necessary. Locale-specific logic doesn't leak to other locales.
Powerful
Date, time, and number formatting. Plural categories. Full bidirectionality support. Custom formatters. Easy-to-read syntax.
Flexible
Client- and server-side. Runtime translation and re-translation. Robust error handling. JS, Python, Rust implementations. React bindings.
Extensible
Compatible with ICU and ECMA 402. Licensed under the Apache 2.0 License.

Why did we create Fluent?

Software localization has been dominated by an outdated paradigm: that the translation is just a dictionary of strings which map one-to-one to the English copy. It is limiting to languages with grammars more complex than English.

We created Fluent to change this paradigm. Translators should be able to use the entire expressive power of their language without asking developers for permission. Fluent allows translations to be asymmetric: a simple string in English can map to a complex multi-variant translation in another language.

The design of Fluent is based on the following five principles: Control and Isolation, Simplicity, Tolerance, Modularity and Composability, and The Principle of Least Power.

Fluent

A localization system designed to improve how software is translated.

Innovative

Powerful

Flexible

Extensible

Why did we create Fluent?

Interactive Examples

Output