Pocket - When you find something you want to view later, put it in Pocket.
LinkLocker - LinkLocker is a lightweight bookmarking service with an emphasis on privacy.
ArchiveBox - The open-source, self-hosted internet archiving solution
Diigo - Diigo is a powerful research tool and a knowledge-sharing community
Advanced Bookmark Search - A fast offline search engine for bookmarks that supports searching operators
Linkman - Linkman Pro allows for managing large amount of URLs in its own database.