Raindrop.io - All your articles, photos, video & content from web & apps in one place.
Pocket - When you find something you want to view later, put it in Pocket.
ShareX - ShareX is a free and open source program that lets you capture or record any area of your screen...
wallabag - Save the web, freely.
Greenshot - Greenshot is a free and open source screenshot tool that allows annotation and highlighting using the built-in image editor.
Buku - A powerful command-line bookmark manager.