Pinterest is described as 'A virtual pinboard to collect, share, and follow collections filled with inspiring ideas like wedding plans, home decor, and personal style' and is a very popular social bookmarking tool in the social & communications category. There are more than 50 alternatives to Pinterest for a variety of platforms, including Web-based, iPhone, Google Chrome, iPad and Android apps. The best Pinterest alternative is Raindrop.io, which is free. Other great apps like Pinterest are Karakeep, Pinry, PureRef and LinkAce.
You have much more flexibility and can even use it for task management or working on projects.