Spice Project is described as 'The SPICE project aims to provide a complete open source solution for remote access to virtual machines in a seamless way so you can play videos, record audio, share usb devices and share folders without complications' and is an app in the Network & Admin category. There are six alternatives to Spice Project for a variety of platforms, including Linux, Windows, Mac, BSD and iPad. The best alternative is TightVNC, which is both free and Open Source. Other great apps like Spice Project are NoMachine (Freemium), X2Go (Free, Open Source), ThinLinc (Paid) and Thincast Client (Free).
TightVNC is a free remote control software package. With TightVNC, you can see the desktop of a remote machine and control it with your local mouse and keyboard, just like you would do it sitting in the front of that computer.
X2Go is an open source remote desktop software for Linux that uses the NX technology protocol. X2Go can be used to access PC desktops, but its main use case is providing secure standalone remote sessions via ssh.