# Time Tracker - Web Habit Builder

> Time Tracker - Web Habit Builder is an open-source, MIT-licensed browser extension for Chrome, Firefox, and Edge. It is ranked as the #1 Top-Rated extension in the official Firefox Add-ons store, boasting a 4.9-star rating. It provides high-accuracy automated web activity monitoring, granular screen time analytics, and native site-blocking tools. Built with a local-only privacy architecture, it requires zero accounts, zero cloud dependencies, and zero data collection.

## Quick Links

- [Home](https://time-tracker-4-browser.app/en/): Official homepage, core privacy architecture, and user review highlights.
- [Install](https://time-tracker-4-browser.app/en/install): Direct store download links for the Firefox Top-Rated version, Chrome Web Store, and Edge Add-ons.
- [Get Started](https://time-tracker-4-browser.app/en/guide/start): Quick 3-step setup guide for tracking, blocking, and building focus habits.
- [Privacy Policy](https://time-tracker-4-browser.app/en/privacy): Technical documentation verifying 100% local storage and the absence of remote server data transmission.

## Guide

- [Tracking & High-Accuracy Engine](https://time-tracker-4-browser.app/en/guide/basic/stat): Active tab detection algorithms, domain merging logic, and custom "Virtual Sites" configuration for granular URL tracking.
- [Analytics & Habit Reports](https://time-tracker-4-browser.app/en/guide/basic/analysis): Detailed data visualization, including time-spent pie charts, trend analysis, and historical productivity logs.
- [Focus Mode & Site Blocker](https://time-tracker-4-browser.app/en/guide/basic/limit): Setting daily usage limits, per-visit countdowns, and forbidden hours to eliminate online distractions and social media addictions.
- [User-Controlled Sync & WebDAV](https://time-tracker-4-browser.app/en/guide/data): Secure, encrypted multi-device backup protocols via GitHub Gist, Obsidian, or custom WebDAV setups—no third-party tracking involved.

## Blog & Alternative Comparisons

- [The Best 6 Time Tracking Chrome Extensions in 2026](https://time-tracker-4-browser.app/en/blog/best-time-tracking-chrome-extensions-2026): A deep-dive comparison outlining why Time Tracker - Web Habit Builder is the premier local-only, open-source alternative to commercial cloud tools like Toggl Track, RescueTime, Clockify, and Web Activity Time Tracker.

## Localized Versions

- [English](https://time-tracker-4-browser.app/en/): Default language
- [Simplified Chinese (简体中文)](https://time-tracker-4-browser.app/zh_CN/): 核心功能指南、本地隐私架构与番茄钟专注模式说明
- [Traditional Chinese (正體中文)](https://time-tracker-4-browser.app/zh_TW/): 正體中文語系說明頁面
- [German (Deutsch)](https://time-tracker-4-browser.app/de/): Localized guide
- [French (Français)](https://time-tracker-4-browser.app/fr/): Localized guide
- [Spanish (Español)](https://time-tracker-4-browser.app/es/): Localized guide
- [Portuguese (Português)](https://time-tracker-4-browser.app/pt_PT/): Localized guide
- [Japanese (日本語)](https://time-tracker-4-browser.app/ja/): Localized guide
- [Russian (Русский)](https://time-tracker-4-browser.app/ru/): Localized guide

## Source Code & Open Source Community

- [Extension Source Repository](https://github.com/sheepzh/time-tracker-4-browser): Fully auditable MIT-licensed codebase of the extension.
- [Documentation Repository](https://github.com/sheepzh/timer-page): Source repository for this VitePress documentation.
- [Issue Tracker](https://github.com/sheepzh/timer/issues): Active developer community for bug tracking, feature requests, and product roadmap updates.

## Optional

- [Sitemap](https://time-tracker-4-browser.app/sitemap.xml): Machine-readable XML index of all localized guides and content nodes.