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Top 23 JavaScript Localization Projects
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Relative Time: Formats a timestamp as a localized string or as relative text that auto-updates in the user's browser.
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SurveyJS
JavaScript Form Builder with No-Code UI & Built-In JSON Schema Editor. Add the SurveyJS white-label form builder to your JavaScript app (React/Angular/Vue3). Build complex JSON forms without coding. Fully customizable, works with any backend, perfect for data-heavy apps. Learn more.
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laravel-auth
Laravel 10 with user authentication, registration with email confirmation, social media authentication, password recovery, and captcha protection. Uses offical [Bootstrap 4](http://getbootstrap.com). This also makes full use of Controllers for the routes, templates for the views, and makes use of middleware for routing. 5 Minutes Stand-up time.
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next-translate
Next.js plugin + i18n API for Next.js 🌍 - Load page translations and use them in an easy way!
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Civic Auth
Auth in Less Than 5 Minutes. Civic Auth comes with multiple SSO options, optional embedded wallets, and user management — all implemented with just a few lines of code. Start building today.
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gatsby-plugin-intl
Gatsby plugin that turns your website into an internationalization-framework out of the box.
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svelte-intl-precompile
I18n library for Svelte.js that analyzes your keys at build time for max performance and minimal footprint
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react-translated
A dead simple way to add complex translations (i18n) in a React (DOM/Native) project 🌎🌍🌏
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javascript-i18next-example
Example repository demonstrating how to integrate Localazy with your javascript app using the i18next library
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InfluxDB
InfluxDB – Built for High-Performance Time Series Workloads. InfluxDB 3 OSS is now GA. Transform, enrich, and act on time series data directly in the database. Automate critical tasks and eliminate the need to move data externally. Download now.
NOTE:
The open source projects on this list are ordered by number of github stars.
The number of mentions indicates repo mentiontions in the last 12 Months or
since we started tracking (Dec 2020).
JavaScript Localization discussion
JavaScript Localization related posts
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Fluent: A localization system for natural-sounding translations
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Writing a document with version control feauters
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Use YouTube to improve your English pronunciation
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Localize your apps without pain. Open-source tool to localize translation strings using GPT
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I made an open-source tool for automating mobile apps and web services localization. It's easy to use!
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Internationalize TypeScript app
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FTL loader
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A note from our sponsor - SurveyJS
surveyjs.io | 16 May 2025
Index
What are some of the best open-source Localization projects in JavaScript? This list will help you:
| # | Project | Stars |
|---|---|---|
| 1 | relative-time-element | 3,719 |
| 2 | hybrids | 3,100 |
| 3 | laravel-auth | 3,040 |
| 4 | next-translate | 2,715 |
| 5 | Traduora | 2,053 |
| 6 | fluent | 1,450 |
| 7 | fluent.js | 954 |
| 8 | gatsby-plugin-intl | 324 |
| 9 | svelte-intl-precompile | 276 |
| 10 | react-translated | 178 |
| 11 | react-i18nify | 154 |
| 12 | odas_web | 149 |
| 13 | transai | 58 |
| 14 | localize-ai | 17 |
| 15 | nextjs-i18n-example | 11 |
| 16 | i18n | 10 |
| 17 | react-intl-example | 9 |
| 18 | hokeylization | 5 |
| 19 | locize-lastused | 3 |
| 20 | angular | 3 |
| 21 | javascript-i18next-example | 3 |
| 22 | l10nify | 2 |
| 23 | localize-react | 0 |
Sponsored
JavaScript Form Builder with No-Code UI & Built-In JSON Schema Editor
Add the SurveyJS white-label form builder to your JavaScript app (React/Angular/Vue3). Build complex JSON forms without coding. Fully customizable, works with any backend, perfect for data-heavy apps. Learn more.
surveyjs.io