Bookmarks are not solved.

My bookmarks constitute my entire knowledge-graph, and one of the scariest things to me on the horizon is Google Chrome's new "Material Design" based, card-based, Bookmarks. <shudder>

xmarks need an account, and I've had an unfortunate data corruption experience with them.

Here's my stand-by solution for the day Google Chrome switches off the classic (i.e. current) Bookmarks Manager... and yes, they're better together:

http://tempr.org/54f653e645cf2.html