Applications

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Overview

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Built-in Applications

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Terminal

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Available Commands

ls          # List directory contents (-l for long, -a for all)
cat         # Display file contents
head        # Show first N lines (-n 10)
tail        # Show last N lines (-n 10)
wc          # Word count (lines, words, chars)
cp          # Copy files
mv          # Move/rename files
rm          # Remove files
mkdir       # Create directory
touch       # Create empty file
chmod       # Change permissions
chown       # Change owner
ln          # Create links
find        # Search files (-name pattern)
grep        # Search patterns (-i -n -c)
sort        # Sort lines
uniq        # Remove duplicates
diff        # Compare files
sed         # Stream editor
awk         # Pattern processing
stat        # File statistics
file        # Determine file type
du          # Disk usage
df          # Filesystem info
write       # Write content to file

ps          # Process status
top         # System monitor (similar to ps)
kill        # Kill process by ID
free        # Memory info
uname       # System info (-a for all)
hostname    # Show hostname
id          # User ID
groups      # User groups
whoami      # Current user
uptime      # System uptime
env         # Environment variables
history     # Command history
cal         # Calendar
date        # Current date/time

ping        # Send ICMP echo
ifconfig    # Network configuration
ip          # Network config (addr|route|link)
ss          # Socket statistics
nslookup    # DNS lookup
dig         # DNS query
curl        # Transfer URL (sandboxed)
wget        # Download file (sandboxed)

neofetch    # System info with ASCII art
sysinfo     # Detailed system information
store       # App store CLI (list|install|remove|run)
screenshot  # Capture screenshot
tile        # Tile all windows
cascade     # Cascade windows
desktop     # Toggle show desktop
shortcuts   # Show keyboard shortcuts overlay
search      # Search persistent filesystem
export      # Export filesystem
gpu         # GPU compositor controls (on|off|status|rain|snow|crt)
expo        # Toggle Exposé view
open        # Open app or file

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Files

• Grid and list view modes
• Breadcrumb navigation
• File operations (copy, move, delete, rename)
• Directory tree navigation
• Quick access to home, documents, downloads
• File preview for text files
• Search within current directory

• Cmd/Ctrl + N: New folder
• Cmd/Ctrl + R: Rename selected
• Delete: Remove selected
• Cmd/Ctrl + C: Copy
• Cmd/Ctrl + V: Paste

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Browser

• Multiple tabs with tab switching
• Address bar with URL validation
• Bookmarks bar
• Back/forward navigation
• Refresh button
• Home button
• Sandboxed iframe for page rendering

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Text Editor

• Syntax highlighting (JavaScript, Python, HTML, CSS, JSON, Markdown)
• Line numbers
• Auto-save (saves to virtual filesystem)
• Find and replace
• Multiple file support
• Monospace font with configurable size
• Bracket matching

• .js, .mjs - JavaScript
• .py - Python
• .html, .htm - HTML
• .css - CSS
• .json - JSON
• .md, .markdown - Markdown
• .txt - Plain text

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System Monitor

• CPU usage per core
• Memory usage (total, used, free)
• Disk I/O statistics
• Network traffic (up/down)
• Process list with PID, name, CPU%, memory
• System uptime
• Battery status (if available)

• Real-time graphs with 60-second history
• Process filtering and search
• Kill process capability
• Sort by CPU or memory usage
• Auto-refresh every 2 seconds

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Settings

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Calculator

• Basic: +, -, ×, ÷
• Scientific: sin, cos, tan, log, ln, √, x², xʸ
• Constants: π, e
• Memory: M+, M-, MR, MC
• History of calculations

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App Store

• Browse app catalog by category (Productivity, Utilities, Entertainment, Social)
• Search apps by name or description
• Install/uninstall with one click
• App details with screenshots and descriptions
• Installed app management
• CLI access via store command

# List all available apps
store list

# Search for apps
store search weather

# Install an app
store install weather-app

# Remove an app
store remove weather-app

# Launch an installed app
store run weather-app

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Enhanced Applications (New in v0.1.0)

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Weather

• Large weather icon (☀️ ☁️ ⛅ 🌧️)
• Temperature in Celsius with large display
• Current condition text
• Location (San Francisco, CA by default)
• Three-column stats (Humidity, Wind, Pressure)
• 5-day forecast cards with day name, icon, high/low

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Notes

• Create unlimited notes
• Two-pane interface (list + editor)
• Auto-save as you type
• Note titles and content
• Timestamp tracking (created and last modified)
• Character count
• Delete notes with confirmation
• Persistent storage (localStorage)

1. Click ”+ New Note” button
2. Enter note title
3. Type content in textarea
4. Auto-saves on every keystroke
5. Switch between notes in left sidebar
6. Delete with confirmation prompt

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Tasks

• Add tasks with Enter key or Add button
• Mark tasks as complete with checkbox
• Separate sections for Pending and Completed
• Delete individual tasks
• Task counters (Pending: X, Completed: Y)
• Persistent storage (localStorage)
• Clean, minimal interface

• Input field for new tasks
• Pending section with unchecked items
• Completed section with checked items (strikethrough)
• Delete button per task
• Section headers with counts
• Empty state messages

• Enter in input field: Add task
• Click checkbox: Toggle completion
• Click Delete: Remove task

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Music Player

• Album artwork display (emoji-based)
• Play/pause controls
• Previous/next track buttons
• Progress bar with seek capability
• Track information (title, artist, duration)
• Playlist view with 5 demo tracks
• Active track highlighting
• Click track to play

1. Neon Dreams - Synthwave Collective (3:45)
2. Digital Horizon - Cyber Pulse (4:12)
3. Aurora Lights - Northern Beats (3:58)
4. Midnight Drive - Retro Wave (4:30)
5. Electric Sky - Neon Knights (3:22)

• ⏮ Previous track
• ▶ Play / ⏸ Pause
• ⏭ Next track
• Progress bar: Click to seek

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App Store Catalog

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Application Management

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Opening Apps

Super + T    # Terminal
Super + F    # Files
Super + B    # Browser
Super + ,    # Settings

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Closing Apps

• Click red close button (traffic light)
• Press Ctrl + Q (closes active window)
• Right-click dock icon → Quit
• Run kill <window-id> in Terminal

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Window Operations

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Data Persistence

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Storage Hierarchy

1. OPFS (Origin Private File System) - Tier 1, survives cache clear
2. IndexedDB - Tier 2, large data storage
3. localStorage - Tier 3, simple key-value pairs
4. Service Worker Cache - Tier 4, fallback

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Performance Optimization

• GPU Acceleration: All animations use CSS transforms
• Virtual Scrolling: Large lists render only visible items
• Lazy Loading: Apps load content on demand
• Debounced Input: Text input is debounced to reduce overhead
• Efficient Rendering: React-like diffing for DOM updates

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Developing Custom Apps

// Register a new app
APPS.push({
  id: 'my-app',
  name: 'My Application',
  icon: 'star',
  color: 'linear-gradient(135deg,#667eea,#764ba2)',
  action: () => {
    const el = createWindow('my-app', 'My Application', 600, 400, 100, 100, '', 'star');
    // Build your app UI
  }
});