# Use Case Matrix: protostatis/unbrowser vs Competition ## Overview **protostatis/unbrowser** is a single-binary, Chrome-free headless browser designed specifically for LLM agents. It provides a lightweight alternative to traditional headless browsers with AI-optimized output formats. ## Competitors Analyzed 1. **protostatis/unbrowser** - Single-binary, Chrome-free headless browser 2. **Lightpanda** - AI-native headless browser built from scratch in Zig 3. **Obscura** - Rust-based headless browser with stealth features 4. **Playwright/Puppeteer** - Traditional headless Chrome-based automation 5. **Selenium** - Legacy browser automation framework ## Use Case Matrix | Use Case | protostatis/unbrowser | Lightpanda | Obscura | Playwright/Puppeteer | Selenium | |----------|----------------------|------------|---------|---------------------|----------| | **LLM Agent Integration** | ✅ Excellent (BlockMap output, MCP-native) | ✅ Good (CDP support) | ✅ Good (CDP support) | ⚠️ Requires parsing | ❌ Poor | | **Memory Footprint** | ~50MB | ~123MB | ~30MB | 200-500MB | 500MB+ | | **Binary Size** | ~10MB | ~64MB | ~70MB | 250MB+ (Chrome) | 100MB+ | | **Cold Start Time** | ~100ms | ~1s | Instant | ~2s | ~3s | | **Static/SSR Pages** | ✅ Excellent | ✅ Excellent | ✅ Excellent | ✅ Excellent | ✅ Good | | **SPA/JavaScript Heavy** | ⚠️ Partial (exec_scripts) | ⚠️ Partial | ⚠️ Partial | ✅ Excellent | ⚠️ Limited | | **Bot-Walled Sites** | ✅ Via cookie handoff | ❌ Limited | ✅ Built-in stealth | ✅ With plugins | ❌ Poor | | **Edge/Lambda Deployment** | ✅ Excellent | ✅ Good | ✅ Excellent | ❌ Chrome too big | ❌ Too heavy | | **Anti-Detection** | ⚠️ Basic | ❌ None | ✅ Built-in stealth | ⚠️ With plugins | ❌ None | | **CDP Compatibility** | ✅ JSON-RPC | ✅ Full CDP | ✅ Full CDP | ✅ Native | ⚠️ WebDriver | | **MCP Integration** | ✅ Native | ⚠️ Via CDP | ⚠️ Via CDP | ❌ None | ❌ None | | **Cost at Scale (100K/day)** | ~Free | ~Free | ~Free | $$$ Chrome fleet | $$$ Infrastructure | | **JavaScript Execution** | ⚠️ Limited (no V8) | ✅ Full JS engine | ✅ V8 engine | ✅ Full V8 | ✅ Full JS | | **Parallel Processing** | ✅ Built-in | ✅ Good | ✅ Good | ✅ Excellent | ⚠️ Limited | | **Learning Curve** | Low (simple API) | Medium | Medium | Medium | High | | **Community/Support** | New (GitHub 0 stars) | Growing | Growing (9.3k stars) | Large ecosystem | Large but legacy | ## Detailed Analysis by Use Case ### 1. **AI Agent Development** - **unbrowser**: Best for LLM agents due to BlockMap output (~500 tokens vs 35KB HTML) - **Lightpanda**: Good CDP support but less AI-optimized output - **Obscura**: Good for AI agents with stealth features - **Playwright/Puppeteer**: Requires manual HTML parsing for LLM consumption - **Selenium**: Poor for AI agents due to complexity ### 2. **Web Scraping at Scale** - **unbrowser**: Excellent for SSR pages, limited for heavy SPAs - **Lightpanda**: Fast for static content, struggles with complex JS - **Obscura**: Best for stealth scraping with anti-detection - **Playwright/Puppeteer**: Most versatile but resource-heavy - **Selenium**: Legacy choice, not recommended for new projects ### 3. **Serverless/Edge Deployment** - **unbrowser**: ✅ Perfect (10MB binary, 50MB RAM) - **Lightpanda**: ✅ Good (64MB binary) - **Obscura**: ✅ Excellent (70MB binary, 30MB RAM) - **Playwright/Puppeteer**: ❌ Chrome too large for Lambda/Workers - **Selenium**: ❌ Too heavy for serverless ### 4. **Bot-Protected Sites** - **unbrowser**: ✅ Cookie handoff approach - **Lightpanda**: ❌ Limited anti-detection - **Obscura**: ✅ Built-in stealth mode - **Playwright/Puppeteer**: ✅ With stealth plugins - **Selenium**: ❌ Easily detected ### 5. **Cost Efficiency** - **unbrowser**: ~Free (your infrastructure) - **Lightpanda**: ~Free (open source) - **Obscura**: ~Free (open source) - **Playwright/Puppeteer**: $$$ Chrome fleet or hosted API - **Selenium**: $$$ Infrastructure costs ## Recommendations by Scenario ### **Choose protostatis/unbrowser if:** - You're building LLM agents that need structured page output - You need to deploy in serverless/edge environments - Memory and binary size are critical constraints - You primarily scrape SSR/static pages - You want MCP-native integration ### **Choose Lightpanda if:** - You need a full JavaScript engine with CDP compatibility - You want a modern alternative written in Zig - You need good performance for static content - You're willing to accept some limitations with heavy SPAs ### **Choose Obscura if:** - You need stealth/anti-detection features - You want V8 JavaScript execution - You need drop-in replacement for Puppeteer/Playwright - You're scraping bot-protected sites ### **Choose Playwright/Puppeteer if:** - You need full browser compatibility - You're scraping complex SPAs with heavy JavaScript - You need extensive plugin ecosystem - Resource constraints aren't critical ### **Choose Selenium if:** - You're maintaining legacy systems - You need support for very old browsers - You have existing Selenium infrastructure ## Key Trade-offs Summary **unbrowser's unique advantages:** - LLM-optimized output (BlockMap) - Smallest footprint (10MB binary, 50MB RAM) - MCP-native integration - Serverless-ready **unbrowser's limitations:** - No V8 JavaScript engine - Limited SPA support - New project with small community - Requires cookie handoff for bot protection **When to avoid unbrowser:** - Heavy JavaScript SPAs (React/Vue dashboards) - Sites requiring Canvas/WebGL/Workers - Complex bot protection requiring behavioral analysis - Need for full browser debugging tools