Settings, tags and the remediation plan are stored in this browser only.
Fleet Console is a browser reconstruction of the vSphere Client with a federated layer above it: every RVTools export becomes one vCenter Server in the inventory, and the Fleet pages aggregate across them. Inventory, hardware, capacity and alarms come from the export; nothing is live and nothing is sent anywhere. Add exports from the menu or by dropping files on the page; a newer export of the same vCenter replaces the older one.
vSphere and vCenter are products of Broadcom (VMware). This reconstruction is not affiliated with Broadcom.