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

Workflowy - A better way to organize your mind.

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

SuperNotecard - Introducing SuperNotecard. SuperNotecard is an online writing tool that features virtual notecards to help arrange facts or scenes, track details, organize paragraphs, and clarify your composition process.

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

Dynalist - Dynalist is a web app that lets you break down and organize your thoughts in the format of lists.