I tried it looong time ago, it was cool and it had its launcher.
Love this site. I’ve been using it for years. I keep my apps on a SSD in a USB 3.0 enclosure and I take between work and home. I did find most USB thumb drives just didn’t have adequate performance for my tastes. Especially using FirefoxPortable.
And the Launcher can update the apps from PortableApps.com as well which is a really nice feature.