OctoFarm was the go-to open-source dashboard for stitching many OctoPrint instances into one print-farm view. It's free, self-hosted and was genuinely useful, but development has stalled: its last stable release was October 2022, the project publicly asked for new maintainers in 2023, and the original website no longer resolves to the project. If you're running a farm on it today, you're running it on unmaintained software, and that's the honest reason most farms eventually move on.
SimplyPrint is a maintained, cloud-native farm platform that has been running print farms since 2020. It manages OctoPrint just like OctoFarm did, and also talks to Bambu, Klipper/Moonraker, Prusa, Marlin (incl. USB) and Duet directly, with no OctoPrint required. On top of monitoring it ships a print queue with staggered start, AutoPrint for continuous lights-out printing, AI failure detection and AI bed-check, a full interactive cloud slicer, filament inventory with NFC and label printing, a maintenance system, native iOS and Android apps, SSO and 2FA, all actively developed and supported. If OctoFarm got your farm started, SimplyPrint is the maintained successor it can grow into.