Pocket - When you find something you want to view later, put it in Pocket.
Browse Later - Browse later is a Firefox add-on using WebExtensions that let you save the current tab to read it...
wallabag - Save the web, freely.
Raindrop.io - All your articles, photos, video & content from web & apps in one place.
historious - historious is a single-click bookmarking search engine. Bookmark a site you like, then come back to historious and search for it using some keywords. It's that simple!
MindSky Web Capture - Save articles and web content to MindSky.