Lines of code:
MS-DOS: 4 thousand
WhatsApp: 30 thousand
Telegram: 50 thousand
Zoom: 60 thousand
TikTok: 80 thousand
Space Shuttle: 400 thousand
Minecraft: 500 thousand
Instagram: 1 million
US Military Drone: 3.5 million
YouTube: 5.4 million
World of Warcraft: 5.5 million
Boeing 787: 6.5 million
Google Chrome: 6.7 million
Chevy Volt: 10 million
Twitter: 10 million
Android: 12 million
iOS: 12 million
Mozilla Firefox: 21 million
Windows XP: 45 million
Large Hadron Collider: 50 million
Ubuntu: 50 million
Facebook: 62 million
MacOS X: 84 million
Tesla: 100 million
Google: 2 billion