I will compare them by benchmark.
Killall vs Game Booster.
Great list. Lots of old favourites there, vlc, irfanview, spybot, spyware blaster, etc, and a lot I hadn't seen before.
Hmmm. Game Booster senses added apps that run as background and gives you the option of closing them, as well as non-essential windows services. The only one I leave running is antivirus. With Killal you'd have to identify and add those to the script?