unv.is is described as 'tool to escape clickbait, trolls and idiots'. There are six alternatives to unv.is, 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 unv.is are Archive.is (Free), Archive.st (Free), Time Travel (Free) and FreezePage (Freemium).
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.