Various embodiments proactively monitor and efficiently manage resource usage of individual tabs. In at least some embodiments, one or more tabs can be dehydrated in accordance with various operational properties, and rehydrated when a user actually activates a particular tab. In at least some embodiments, rehydration can occur on a tab-by-tab basis, while at least some tabs remain dehydrated. Dehydrated tabs can, in some embodiments, be visually presented to a user in a manner in which normal, active tabs are presented.