materialpoll.tk is described as 'open source alternative to strawpoll.me'. There are eight alternatives to materialpoll.tk, not only websites but also apps for iPhone, iPad and Mac. The best alternative is Straw Poll, which is free. Other great sites and apps similar to materialpoll.tk are poll.ly (Free), YouChoose (Free), Smartpolls (Free) and Boll (Free).
Free, fast and easy survey / online pol tool. Create unlimited polls, share the results, see live updates as votes are entered. Surveys can have multiple rounds of voting, helping you narrow down the choices.
Agree is a shared voting app to help you come to a joint decision with friends and colleagues. Create and share polls, and simply swipe right to vote yes and left for no. Winning options pop up as a notification once everyone has voted.