In terms of features, both { -brand-name-firefox } and { -brand-name-chrome } offer a large library of extensions and plug-ins, with { -brand-name-chrome }’s catalog vastly outnumbering any other browser while nicely integrating with other { -brand-name-google } services, like Gmail and { -brand-name-google } Docs.
O ran nodweddion, mae { -brand-name-firefox } a { -brand-name-chrome } yn cynnig casgliadau mawr o estyniadau ac ychwanegion, gyda chatalog { -brand-name-chrome } yn fwy o lawer nag unrhyw borwr arall tra'n  integreiddio'n hwylus â gwasanaethau { -brand-name-google } eraill, fel Gmail a { -brand-name-google } Docs.