The Xmark service was officially discontinued on the first of May last year. This service synchronized bookmarks between different browser installations – long before the manufacturers integrated this into their solutions as a function. But there were alternatives if you didn’t want to rely on the solutions of the browser providers. For example, Syncmarx by Greg McLeod.
He now informs (including download links) that his extension is now open source for everyone. Why should you use something like this with Chrome or Firefox at all? Well, Greg actually explained it quite simply:
I should add that I definitely think services like syncmarx that let you you “bring-your-own-backend”, so to speak, could become a major player in the future of tech. So here’s to a long life ahead for bookmarks synchronization everywhere!