I wouldn't call it "superseeded", it just has a different set of trade-offs. From the description: Advantages over The Great Suspender: - More memory savings -

I wouldn't call it "superseeded", it just has a different set of trade-offs. From the description: Advantages over The Great Suspender: - More memory savings - Compatible with chrome tab syncing - Super lightweight extension that uses no content scripts or persistent background scripts Disadvantages over The Great Suspender: - No visibility on which tabs have been suspended - Unable to prevent a tab from reloading when it gains focus -- I'd say those disadvantages (particularly the second one) outweigh any increase in memory savings.