There is an old laptop in your closet. Gathering dust. Dead battery. Slow processor. You keep it because you feel guilty throwing it away. That laptop can replace every cloud subscription you pay for. - Netflix - Google - Dropbox - 1Password That is $42 a month. $504 a year. To rent things you used to own. The old laptop in your closet could do all of it. Now meet CasaOS. A free and open source system that turns any old laptop, Raspberry Pi, or mini PC into your own personal cloud. You run one command. In 30 minutes, the laptop becomes a server. You open it from your phone, your TV, your work computer, anywhere in the world. Then you pick the apps you want from a built-in store. One click each. - Jellyfin to replace Netflix. Stream every movie and show you own. - Immich to replace Google Photos. Faces and search included. - Nextcloud to replace Dropbox. Sync every file across every device. - Vaultwarden to replace 1Password. All your passwords, your keys. - Syncthing to keep files in sync across every device, no cloud. - Home Assistant to control every smart device in your home. - AdGuard to block ads on every device on your wifi. Setting up a home server the old way took an entire weekend. Install Linux. Learn Docker. Write config files. Set up storage. Fix errors. Look up every app one by one. CasaOS does all of that for you. No code. No config files. No Linux skills. You see icons on a screen. You click them. 34,116 stars on GitHub. Apache 2.0. Free forever. Built by a small team starting September 2021. Runs on Raspberry Pi, Intel NUC, old laptops, and most home servers. Over 100,000 Docker apps can be installed. A new Raspberry Pi costs $50. The old laptop in your closet costs $0. It already works. It is already in your house. Netflix charges every month. CasaOS doesn't. Google charges every month. CasaOS doesn't. Dropbox charges every month. CasaOS doesn't. 1Password charges every month. CasaOS doesn't. Here is the wild part. The laptop you forgot about is more powerful than the web server that ran most websites in 2008. It is sitting in a drawer. It costs you nothing. It already works. One command. Thirty minutes. Five hundred dollars a year back in your pocket. Your files. Your photos. Your movies. Your home. Your closet just became a data center.