A comprehensive, searchable catalog of 8,000+ Arduino libraries from GitHub, updated automatically and presented through an intuitive web interface.
Live Site: The Arduino Library
The Arduino Library Manager allows anyone to create and update libraries that are available through the Arduino IDE. When updating my own libraries in the registry I realized just how many were there and became curious to learn more about them. Unfortunately, I couldn't find a way to search or browse the libraries, so here we are.
This site takes advantage of the standard data structure required by the Arduino Registry. It polls the full Arduino Registry and uses the library properties file along with updated information to generate a json database of the information. A quick update runs nightly with a full re-build weekly.
- Use the search box to find libraries by keyword, functionality, or author name
- Search looks through library names, descriptions, authors, and categories
- Results are grouped by match type: Library Names, Authors, Categories, and Descriptions
- Use the "Jump to" navigation links to quickly move between search result sections
- Click the "×" button to clear your search and return to browsing mode
- Browse by Subject: Expand the "Browse By Subject" section to see categories like "Sensors", "Communication", "Display"
- Browse by Platform: Expand the "Browse by Platform" section to filter by Arduino architecture (ESP32, ESP8266, AVR, SAMD, etc.)
- Toggle Categories: Click a category or platform button to view only those libraries; click again to return to all libraries
- Most Recent: See recently updated libraries (active development) - default view
- Alphabetical: Browse libraries A-Z or Z-A
- Most Popular (Stars): Libraries with the most GitHub stars
- Least Recent: Oldest libraries (may be outdated)
- Registry Order: Random arrangement for discovery
- Heavily Relied: Libraries with many dependencies (widely used)
Each library card shows:
- Name & Version: Current library version
- Author: Library developer (clickable to filter by author)
- Description: What the library does
- Last Updated: How recently the library was modified
- GitHub Stars: Community popularity indicator
- Category: Subject classification
Click any library card to open a detailed view with:
- Complete Description: Full library documentation
- GitHub Repository: Direct link to source code
- Version Information: Current version and update history
- Author Details: Clickable author name to see all their libraries
- Platform Support: Supported Arduino architectures
- Dependencies: Required libraries (if any)
- Alphabetical Neighbors: Discover similar libraries
- Copy Library Name: Quick copy button for Arduino IDE installation
- Collapsible Sections: Click section headers to expand/collapse filter options
- Sticky Search: Search box stays visible while scrolling through results
- Search Navigation: When searching, use "Jump to" links to navigate between result categories
- Modal Navigation: Browse related libraries without leaving the detail view
The Arduino Library Browser is a fully automated system that discovers, processes, and presents Arduino library data through a static web application with automated data pipeline.
- Daily Incremental Updates: Scans GitHub every day for new and updated Arduino libraries
- Weekly Full Enhancement: Complete refresh of all library metadata and GitHub statistics
- Smart Search Queries: Uses multiple GitHub API strategies to ensure comprehensive coverage
- Rate Limiting: Respects GitHub API limits with intelligent retry logic
- Library Properties Parsing: Extracts metadata from
library.propertiesfiles - GitHub Integration: Enriches data with stars, forks, and activity metrics
- Validation & Cleanup: Ensures data quality and consistency
- Incremental Updates: Only processes changed libraries for efficiency
The system maintains a JSON database containing:
{
"enhanced_at": "2025-07-30T13:16:00Z",
"total_libraries": 8027,
"libraries": [
{
"name": "Library Name",
"version": "1.2.3",
"author": "Developer Name",
"sentence": "Brief description",
"paragraph": "Detailed description",
"category": "Sensors",
"architectures": "esp32,esp8266,avr",
"repository_url": "https://github.com/user/repo",
"github_stars": 42,
"github_forks": 7,
"github_updated_at": "2025-07-29T10:30:00Z",
"processed_at": "2025-07-30T13:16:15Z"
}
]
}- Daily Workflow: Runs at 7 AM UTC, processes recent changes (15-30 minutes)
- Weekly Workflow: Runs Sundays at 6 AM UTC, full database refresh (4-6 hours)
- Error Handling: Robust retry logic and graceful failure recovery
- Progress Tracking: Detailed logging and statistics for monitoring
- Static Site: Pure HTML/CSS/JavaScript for fast loading and reliability
- GitHub Pages: Automatically deployed when data updates
- Client-side Processing: All filtering and sorting happens in the browser
- PowerShell: Data processing scripts with GitHub API integration
- GitHub Actions: Automated workflows for continuous updates
- GitHub Pages: Static site hosting with automatic deployment
- Vanilla JavaScript: Lightweight, dependency-free web interface
- Library Coverage: 8,000+ libraries and growing
- Update Frequency: Daily incremental, weekly comprehensive
- API Efficiency: ~35,000-40,000 GitHub API calls per month (well within limits)
- Site Speed: < 2 second load times, client-side filtering for instant results
- Automated Backups: Git history preserves all data versions
- Graceful Degradation: Site works even with partial data
- Error Recovery: Automatic retry logic for temporary failures
- Monitoring: GitHub Actions provide detailed execution logs
Found a bug or have a suggestion? Please open an issue on GitHub.
This project is open source. Individual Arduino libraries maintain their own licenses - check each library's repository for specific terms.