XMarks is a cloud based bookmark management platform.

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

Kifi creates a full-text index of every web page shared, making them easier to find in Slack, Google search.

elCurator let you bookmark, read and collaborate with ease.

Papaly is a simple social bookmarking tool to manage links.

start.me is a modern-day bookmark manager.

Pearltrees is a visual and collaborative curation tool.

Bubblehunt is search platform, where you can create own search system.