Bookmark OS Alternatives for Online

Diigo is a powerful research tool and a knowledge-sharing community.

Netvibes Dashboard platforms transform browsing, sharing, and tagging into tangible business data to share, analyze, and act on in real-time.

Google Bookmarks is a free online bookmarking service, available to Google Account holders.

inboard (Pinboard.in) is a social bookmarking website.

Tagpacker is a free tool to collect, organize, and share your favorite links.

historious is a single-click bookmarking search engine.

Pearltrees is a visual and collaborative curation tool.

Basket is an online knowledge management platform.

Dropmark is an online collaboration platform.