_____             _____           _            
 |  __ \           |  __ \         | |           
 | |  | | _____   _| |__) |__ _  __| | __ _ _ __ 
 | |  | |/ _ \ \ / /  _  // _` |/ _` |/ _` | '__|
 | |__| |  __/\ V /| | \ \ (_| | (_| | (_| | |   
 |_____/ \___| \_/ |_|  \_\__,_|\__,_|\__,_|_|   
                                                 
                                                 
      Development Server & Stack Scanner

🧪 DevRadar

DevRadar is a powerful Development-Focused Network Scanner built in Go to help teams discover and identify development servers and hosted applications across a local network. Perfect for DevOps teams, developers working in shared environments, hackathons, and security audits.

---

🚀 Key Features

🎯 Comprehensive Development Server Detection

• Auto-Discovery: Automatically detects local network range and discovers active hosts
• Concurrent Scanning: Multi-threaded scanning for fast network discovery
• Smart Port Detection: Scans 40+ common development ports including:
  • Node.js/React: 3000-3005
  • Python/Django/Flask: 8000-8002, 5000-5002
  • Java/Spring Boot: 8080-8082, 8090, 9000-9001
  • Angular: 4200-4202
  • .NET: 5000-5001, 7000-7001, 44300-44301
  • Jupyter: 8888-8889
  • General Dev: 6000-6001, 7777, 9090, 9999, 10000

🔍 Advanced Technology Detection

• HTTP/HTTPS Probing: Automatically tries both HTTP and HTTPS protocols
• Content Analysis: Deep inspection of HTML content and response headers
• Framework Detection: Identifies popular frameworks and technologies:
  • Frontend: Next.js, React, Vue.js, Angular
  • Backend: Express, Django, Flask, Spring Boot, ASP.NET, Rails, Go
  • Development Tools: Jupyter Notebook, Webpack Dev Server
• Title Extraction: Extracts page titles using regex pattern matching
• Server Identification: Analyzes server headers for additional insights

📊 Beautiful Console Output

• Styled Terminal Interface: Rich ANSI color-coded output with Unicode characters
• Organized Display: Clear hierarchical presentation of results
• Real-time Progress: Live scanning progress updates
• Detailed Reporting: Comprehensive information for each discovered service
• Technology Statistics: Summary with technology distribution and visual charts

---

🧠 Technologies It Can Identify

| Technology | Detection Method | Frameworks/Tools | |------------|------------------|------------------| | JavaScript | Content & Headers | Next.js, React, Vue.js, Angular, Express, Webpack | | Python | Content Analysis | Django, Flask, Jupyter Notebook | | Java | Content & Patterns | Spring Boot | | .NET | Headers & Content | ASP.NET, Kestrel Server | | Node.js | Headers & Content | Express.js | | PHP | Content Detection | Generic PHP Applications | | Ruby | Content Analysis | Ruby on Rails | | Go | Content Patterns | Go HTTP Servers |

---

🖥️ Example Output

  _____             _____           _            
 |  __ \           |  __ \         | |           
 | |  | | _____   _| |__) |__ _  __| | __ _ _ __ 
 | |  | |/ _ \ \ / /  _  // _` |/ _` |/ _` | '__|
 | |__| |  __/\ V /| | \ \ (_| | (_| | (_| | |   
 |_____/ \___| \_/ |_|  \_\__,_|\__,_|\__,_|_|   
                                                 
         Development Server & Stack Scanner

═══════════════════════════════════════════════════════════════════════════════

┌─ Network Information ────────────────────────────────────────────────────────┐
│ Local IP:            192.168.1.100
│ Scanning network:    192.168.1.0/24

┌─ Host Discovery ─────────────────────────────────────────────────────────────┐
│ 🔍 Discovering hosts...
│ ✅ Found 5 active hosts

┌─ Development Server Scanning ────────────────────────────────────────────────┐
│ 🔍 Scanning 192.168.1.105 for development servers...

╔══════════════════════════════════════════════════════════════════════════════╗
║                     🎯 DEVELOPMENT SERVERS DISCOVERED                        ║
╚══════════════════════════════════════════════════════════════════════════════╝

┌─ 🖥️  HOST: 192.168.1.105 (johns-laptop) ──────────────────────────────────┐
│  🌐 Port 3000: Next.js Development Server
│     🔧 Technology: Next.js (React)
│     📄 Title: My Awesome App
│     🔗 URL: http://192.168.1.105:3000
│     📊 Status: 200 OK
│
│  🌐 Port 8000: Python Application
│     🔧 Technology: Python (Django)
│     📄 Title: Django Administration
│     ⚙️  Server: WSGIServer/0.2
│     🔗 URL: http://192.168.1.105:8000
│     📊 Status: 200 OK
└──────────────────────────────────────────────────────────────────────────────┘

╔══════════════════════════════════════════════════════════════════════════════╗
║                              📊 SCAN SUMMARY                                 ║
╚══════════════════════════════════════════════════════════════════════════════╝

🏠 Total Hosts: 1
🌐 Total Services: 2

📈 Technology Distribution:
  Next.js      ██ (1)
  Python       ██ (1)

🎉 Scan completed successfully! Happy developing! 🚀

---

📦 Installation & Usage

🎯 Quick Install (Recommended)

Option 1: Download Pre-built Binaries (Easiest)

Visit the Releases Page and download the appropriate executable for your system:

| Platform | Architecture | Download | |----------|-------------|----------| | Linux | AMD64 (x86_64) | devradar-linux-amd64 | | Linux | ARM64 | devradar-linux-arm64 | | macOS | Intel (x86_64) | devradar-macos-amd64 | | macOS | Apple Silicon (M1/M2) | devradar-macos-arm64 | | Windows | AMD64 (x86_64) | devradar-windows-amd64.exe | | Windows | ARM64 | devradar-windows-arm64.exe |

Linux/macOS:

# Download the appropriate binary
wget https://github.com/hamshad/DevRadar/releases/latest/download/devradar-linux-amd64

# Make it executable
chmod +x devradar-linux-amd64

# Run the scanner
./devradar-linux-amd64

Windows:

# Download devradar-windows-amd64.exe from releases
# Run directly from command prompt or PowerShell
devradar-windows-amd64.exe

🔧 Build from Source

Prerequisites:

• Go 1.21+ installed on your system
• Git (optional, for cloning)

Steps:

# Clone the repository
git clone https://github.com/hamshad/DevRadar.git
cd DevRadar

# Build for your platform
go build -ldflags="-s -w" -o devradar dev_radar.go

# Run the scanner
./devradar

Cross-compile for other platforms:

# Linux AMD64
GOOS=linux GOARCH=amd64 go build -ldflags="-s -w" -o devradar-linux dev_radar.go

# macOS ARM64 (Apple Silicon)
GOOS=darwin GOARCH=arm64 go build -ldflags="-s -w" -o devradar-macos dev_radar.go

# Windows AMD64
GOOS=windows GOARCH=amd64 go build -ldflags="-s -w" -o devradar.exe dev_radar.go

🚀 Running DevRadar

Once you have the executable:

1. Simply run the binary:

   ./devradar-linux-amd64        # Linux
   ./devradar-macos-arm64        # macOS
   devradar-windows-amd64.exe    # Windows
   

2. What happens automatically:

   • Detects your local network range
   • Discovers active hosts
   • Scans for development services
   • Displays results with beautiful formatting

🔐 Verification

All releases include checksums for security verification:

# Download checksums.txt from the release
wget https://github.com/hamshad/DevRadar/releases/latest/download/checksums.txt

# Verify integrity (Linux/macOS)
sha256sum -c checksums.txt

# Verify integrity (Windows PowerShell)
Get-FileHash devradar-windows-amd64.exe -Algorithm SHA256

---

🔍 Ideal Use Cases

• Team Development: Discover what teammates are running on shared networks
• DevOps Audits: Quickly inventory development services across infrastructure
• Hackathons: Find and catalog running applications during collaborative events
• Security Assessment: Identify exposed development servers for security review
• Network Documentation: Generate reports of active development services
• Troubleshooting: Locate services that might be conflicting or causing issues

---

⚡ Technical Details

Architecture

• Concurrent Design: Uses Go routines with semaphores for controlled concurrency
• Network Discovery: CIDR-based subnet scanning with automatic network detection
• Service Detection: TCP connection testing followed by HTTP/HTTPS probing
• Content Analysis: Regex-based pattern matching for technology identification
• Error Handling: Graceful handling of network timeouts and connection failures

Performance Optimizations

• Parallel Processing: Utilizes all CPU cores with GOMAXPROCS
• Connection Pooling: Efficient HTTP client with proper timeout handling
• Selective Scanning: Prioritizes common development ports for faster discovery
• Memory Efficient: Streaming response processing to minimize memory usage

Network Behavior

• Non-Invasive: Only performs lightweight TCP connections and HTTP GET requests
• Timeout Management: 500ms for port checks, 5s for HTTP requests
• Rate Limiting: Semaphore-controlled concurrency to prevent network flooding
• Protocol Detection: Automatic fallback from HTTPS to HTTP

---

🔄 Continuous Integration

DevRadar uses GitHub Actions for automated building and releasing:

🏗️ Automated Builds

• Triggers: Every push to main, PR creation, and tag creation