Pinboard has a nice API and "snapshots". There are also numerous native clients and browser extentions to choose from. - https://pinboard.in/ https://pinboard.i

Pinboard has a nice API and "snapshots". There are also numerous native clients and browser extentions to choose from. - https://pinboard.in/ https://pinboard.in/ A pretty good native client I use (mac only) - http://bananafishsoftware.com/products/spillo/ http://bananafishsoftware.com/products/spillo/