Engineering Innovation for Everyone | by NXORG
The Universal Coding Hub designed to master competitive programming and technical interviews. Whether you are grinding LeetCode, competing on Codeforces, or studying advanced algorithms, Green Code empowers you with disciplined time tracking and habit building.
A sleek, high-contrast (Dark/Light mode) browser extension with problem auto-detection (optimized for LeetCode), comprehensive analytics, and a fully responsive data-driven dashboard.
- Auto-Detection: Automatically extracts problem number and name from LeetCode.
- Smart Automation: Auto-add detected problems and auto-start timers (optional).
- Status Manager: Fully customizable, color-coded problem statuses (e.g., Started, Solved, Mastered).
- Multi-Problem Tracking: Manage multiple active problems with independent stopwatches.
- Standalone Timer & SW: Compact dedicated timer and stopwatch for general use with customizable presets.
- Smart Review Engine: Integrated spaced repetition logic that automatically schedules problems for re-solving based on your performance (1, 3, or 7 days).
- Revisit Dashboard: A dedicated section in the Problems tab that alerts you when specific questions are due for a review.
- Problem-Specific Deep-Dive: Dedicated analytics modal for every problem with trend visualization.
- Performance Metrics: Automatically calculates Average Speed, Personal Best, and Cumulative Time spent per question.
- Activity Heatmap: Yearly contribution heatmap (GitHub-style) to track consistency.
- Daily Goals: Set and track daily problem-solving targets with live progress indicators.
- On-Page Floating HUD: A minimalist, draggable timer that injects directly into LeetCode so you can track your progress without leaving the page.
- Zen Mode: Reduce interview anxiety by hiding the ticking numbers and replacing them with a subtle pulsing focus indicator.
- LeetCode Auto-Detection: Automatically captures the problem name and number as you browse.
- Multi-Problem Tracking: Manage multiple active problems with independent stopwatches.
- Auto-Fetching: Automatically extracts topic tags from LeetCode.
- Centralized Tags: Tags are synchronized across all attempts of the same problem via our problem-centric metadata engine.
- Multi-Select Filtering: Filter history using multiple tags with intuitive removable badges and "AND" logic.
- Tag Library Manager: Manage your practice categories in a centralized settings interface.
- Problem-Centric Architecture: Optimized storage structure that groups attempts under parent problems, ensuring data integrity and lightning-fast retrieval.
- Inline Editing: Edit problem notes directly within the glass-terminal history log.
- Markdown Support: Format your notes/code snippets with Markdown.
- Export/Restore: Robust JSON backup and CSV export (including tags) for external analysis.
- Red Mode (Testing): Strict environment isolation via
?red-mode=1URL parameter to protect your live history during development and stress testing.
- High Contrast: Instant switching between Dark (#00ff00) and Light (#008000) modes.
- Responsive: Fluid layout that adapts perfectly from a tiny popup to a 4K monitor or mobile screen.
- Fast: Zero CSS transitions for instant, snappy interaction.
All data is stored locally within your browser. We never send your data to 3rd party servers. Your privacy is our foundational engineering principle.
Chrome Web Store coming soon.
This project is licensed under the GNU General Public License v3.0 (GPLv3).
- Source Code: https://github.com/nxorg/green-code
- Organization: https://nxorg.xchip.in/
- Creator: Manoj Kumar
Copyright (C) 2026 Manoj Kumar