Buku - A powerful command-line bookmark manager.

Pocket - When you find something you want to view later, put it in Pocket.

Shiori Bookmark Manager - Simple bookmark manager built with Go

Raindrop.io - All your articles, photos, video & content from web & apps in one place.

Tettra - Tettra is a company wiki that helps teams manage and share organizational knowledge.

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