Reload in 5 is the operating system for network engineers. Get unlimited free Network+ practice and CCNA practice with no daily session limit — study cert questions as long as you want, every day, at no cost.
Backbone Pro unlocks the full CCNP question banks, the AI Config Checker and AI Config Creator, the unlimited IOS CLI Lab, and unlimited Route Zero runs.
Reload in 5 also ships free network engineering tools, including a subnet calculator, MAC address lookup, DNS tools, and an email header analyzer. CCNA practice, Network+ practice, browser labs, and live leaderboards in one place.
Start practicing free · See Backbone Pro · Network engineering tools
Data Center Tycoon is a free data center idle game and infrastructure strategy game. Build and own racks, deploy servers and GPU clusters, manage power, cooling, water, and bandwidth, and scale your data center empire.
Mine and earn three in-game coins — RAC, PKT, and QBT — to fund upgrades, defenses, and high-end hardware as you grow. Complete contracts, climb the leaderboard, and capture data centers from rival operators.
Data Center Tycoon is free to play in your browser and on iOS. Download Data Center Tycoon on the App Store.