Pocket - When you find something you want to view later, put it in Pocket.
Keep Everything - Light & Fast Web Archiver for iOS, OS X.
wallabag - Save the web, freely.
WebSatchel - Copy and save web pages to your own personal archive
Raindrop.io - All your articles, photos, video & content from web & apps in one place.
Instapaper - Instapaper is a simple tool to save web pages for reading later.