Pocket - When you find something you want to view later, put it in Pocket.
Raindrop.io - All your articles, photos, video & content from web & apps in one place.
Relevance Coin - 1 billion free coins to improve relevance on the web
Keep Everything - Light & Fast Web Archiver for iOS, OS X.
Tagpacker - A free tool to quickly collect, organize, and share your favorite links.
Pinboard - Pinboard is a personal archive for things you find online and don't want to forget.