Pocket - When you find something you want to view later, put it in Pocket.
Raindrop.io - All your articles, photos, video & content from web & apps in one place.
Linkman - Linkman Pro allows for managing large amount of URLs in its own database.
wallabag - Save the web, freely.
Buku - A powerful command-line bookmark manager.
Diigo - Diigo is a powerful research tool and a knowledge-sharing community