XMarks is a cloud based bookmark management platform.

Firefox Sync allows accessing your open tabs, bookmarks, history, passwords and preferences everywhere.

GC Bookmarks is a cloud based bookmark manager.

ReadKit is a full-featured read later and RSS client that supports services from Instapaper, Pocket, Pinboard, Feedly, Fever, NewsBlur, Feedbin, etc.

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

Papaly is a simple social bookmarking tool to manage links.

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

Linkman is a bookmark organizer that provides uniform access to bookmarks and favorites across browsers and even multiple computers.

Listango is an online bookmark manager that lets you save your favorites online and access them from anywhere.