# Locallhost.dev > A helpful website for developers who accidentally type "locallhost" instead of "localhost". Provides redirects, troubleshooting guides, and comprehensive solutions for common development server issues across different ports and frameworks. This website serves as a typo-catching service and development resource hub. When developers mistype "localhost" as "locallhost", they land here and get redirected to the correct address along with useful troubleshooting information. The site covers common development ports (3000, 8080, 5000, etc.) and database ports (3306, 5432, 27017, etc.) with framework-specific guidance. Key features: - Port-specific troubleshooting pages for web development and database connections - Command-line tools and solutions for common issues - Framework-specific guidance (React, Angular, Flask, Django, etc.) - Cross-platform support (Windows, Mac, Linux) ## Web Development Ports - [Port 3000](https://locallhost.dev/3000/): React, Express, Rails development server troubleshooting - [Port 8080](https://locallhost.dev/8080/): Spring Boot, Tomcat, Vue.js server issues and solutions - [Port 8000](https://locallhost.dev/8000/): Django, PHP development server guidance - [Port 4200](https://locallhost.dev/4200/): Angular CLI development server troubleshooting - [Port 5000](https://locallhost.dev/5000/): Flask, .NET Core, Python server solutions - [Port 5173](https://locallhost.dev/5173/): Vite.js development server issues - [Port 9000](https://locallhost.dev/9000/): SonarQube, PHP-FPM, Tomcat troubleshooting ## Database Ports - [Port 3306](https://locallhost.dev/3306/): MySQL, MariaDB connection troubleshooting and solutions - [Port 5432](https://locallhost.dev/5432/): PostgreSQL database connection issues and fixes - [Port 27017](https://locallhost.dev/27017/): MongoDB database connection troubleshooting - [Port 6379](https://locallhost.dev/6379/): Redis cache server connection issues - [Port 1433](https://locallhost.dev/1433/): SQL Server database connection troubleshooting ## Backup Ports - [Port 3001](https://locallhost.dev/3001/): React/Node.js backup port when 3000 is busy - [Port 8081](https://locallhost.dev/8081/): Spring Boot/Tomcat backup port solutions - [Port 5001](https://locallhost.dev/5001/): Flask/.NET backup port troubleshooting - [Port 4201](https://locallhost.dev/4201/): Angular backup port when 4200 is occupied ## Troubleshooting Guides - [Port Already in Use](https://locallhost.dev/port-already-in-use/): Complete guide to finding and killing processes using specific ports - [Connection Refused](https://locallhost.dev/connection-refused/): Network connection troubleshooting for localhost issues - [CORS Errors](https://locallhost.dev/cors-errors/): Cross-origin request solutions and fixes - [Localhost Not Working](https://locallhost.dev/localhost-not-working/): General localhost troubleshooting checklist and solutions ## Optional - [Main Page](https://locallhost.dev/): Homepage with IP detection, headers display, and quick command reference - [404 Error Page](https://locallhost.dev/404.html): Custom error page for missing resources