Every homelab ends up with twenty browser tabs, and nexdeck turns them into one board of cards that update on their own. The server asks each service in its own rhythm and pushes changes to every open browser, so ten tabs cost a service only one request. Cards cover Proxmox, Docker, Synology, TrueNAS, Pi-hole, Plex, Radarr, Home Assistant, and over two hundred more. Administrators can act from the cards by restarting a container, starting a VM, or pausing downloads, and every action is logged. Pages arrange freely on a 12, 24, or 36 column grid, with a phone layout that stacks cards in order and a kiosk link for wall displays that needs no sign-in. A network page draws a live UniFi plan with traffic on every link. A chronicle records outages and changes, history charts reach back two years, and alerts go to Telegram, email, Web Push, ntfy, Gotify, Discord, Slack, or Apprise. Boards export as YAML for Git, Docker labels create tiles, and OpenID Connect handles sign-in with roles and board sharing. Thirteen colour themes, light and dark modes, skins, and twelve languages make it yours. A demo board with invented data offers a safe first look. Running on a dedicated VPS on RepoCloud with guaranteed CPU, RAM, and SSD, full root SSH access, and a browser serial console. AGPL-3.0 licensed.