Firefox sync and Chrome sync came out about the same time if I remember correctly. The first release was in Firefox 4.0, but Mozilla Weave (the addon that event

Firefox sync and Chrome sync came out about the same time if I remember correctly. The first release was in Firefox 4.0, but Mozilla Weave (the addon that eventually developed into the first version of Firefox Sync) existed since 2007, before Chrome's first release. An old Ars Technica article comparing the two protocols (much has changed since then): https://arstechnica.com/information-technology/2010/10/ars-examines-chrome-and-firefox-bookmark-sync-protocols/ https://arstechnica.com/information-technology/2010/10/ars-e...