Really have to mention Spacedesk here. It's currently free while in beta and offers a few interesting a features.
A big con first: it can only use a Windows PC as a "host". So if you have a pure Mac setup, then it's not for you.
A second con: it currently only has support for wireless transmission, but corded support is coming.
But the biggest pro for me, is that it can also use a desktop computer as target display. So if you like me, have an iMac and a PC laptop (from work), I can use my iMac as a 2nd display to my work PC, and it works quite well.
It even extends my iMac mouse to the target PC, acting almost as a wireless dock.
It of course also has an iPad app. There's a noticeable lag, so it's not for everyone. But I find it great since I can put up text documents etc on my big screen and keep mail etc on the small laptop screen.
A big con first: it can only use a Windows PC as a "host". So if you have a pure Mac setup, then it's not for you.
A second con: it currently only has support for wireless transmission, but corded support is coming.
But the biggest pro for me, is that it can also use a desktop computer as target display. So if you like me, have an iMac and a PC laptop (from work), I can use my iMac as a 2nd display to my work PC, and it works quite well.
It even extends my iMac mouse to the target PC, acting almost as a wireless dock.
It of course also has an iPad app. There's a noticeable lag, so it's not for everyone. But I find it great since I can put up text documents etc on my big screen and keep mail etc on the small laptop screen.