Is there any way to combat limescale in water supply at your property?

I have two bathrooms & two kitchens in my house and as only one every gets used regular, the other taps seems to clog up with limescale.
I installed new taps & water pipe tails in second bathroom & kitchen and with in a year they have both started leaking.
When I dismantled the taps & pipe tails, they are solid with limescale.

I don't want the big bulky water softener machine under the sinks, so what about these magnets that you install around the water pipes, do these work?

Anyone got magnets wrapped around their water pipes & do they work or is there another method to soften the water?

Thanks.