Wayback Machine - Browse through over 150 billion web pages archived from 1996 to a few months ago.
Social Champ - Social Champ - The Efficient Social Media Management Tool and Scheduler
Waybackpack - Download the entire Wayback Machine archive for a given URL
Social Aider - Social Aider is an affordable, user-friendly social media management tool that helps businesses to enhance their marketing campaigns.
Archive.md - archive.is allows you to create a copy of a webpage that will always be up even if the original link is down
AWARIO - Track brand mentions & competitors across the web