Peeep.us is described as 'is more than a URL shortener. It stores current contents of a web page and gives you a link to the stored copy. So even if the author alters or deletes the page or even the whole site is shut down you will have a proof that it existed'. There are seven alternatives to Peeep.us, not only websites but also apps for a variety of platforms, including Android, iPhone, Android Tablet and iPad. The best alternative is Wayback Machine, which is free. Other great sites and apps similar to Peeep.us are Archive.is (Free), Archive.st (Free), Time Travel (Free) and TightURL (Free, Open Source).
Free online service for freezing web pages. Save, share and prove what is on the web at a specific point of time. You have to register a free account and to log in every month otherwise your frozen pages won't last more than 3 days.
7kb is a website for users of Facebook and Twitter, and mobile users that need to shorten URLs to save on space, want to bundle disparate media content together on one page, and crop web pages for others to see.