Endlesss.fm is the way to go for playing music with friends online for free. Instead of trying to beat network latency (which is impossible) endlesss provides

Endlesss.fm is the way to go for playing music with friends online for free. Instead of trying to beat network latency (which is impossible) endlesss provides a shared looper and a clock to sync all your gear to. This way you can jam with people with zero audible latency, building up ideas. And a bonus is that every version (“riff”) is stored and can be revisited or exported into a DAW. It’s an incredible tool.