Ustv247.com is all you need.

Footybite

There are some, just google the name of the event and free livestream (e.g. Sheffield United Liverpool free livestream). They aren’t really very good though, lots of bufferering, lost signals and fuzzy picture. But I guess will do in a pinch

SlingTV trials

What live events? Can you be a bit more specific.

vipsportsbox

firstrowsports

Yaeh got desperate and tried Mobdro. It still worked.