I'm on my second try of Slidepad, the first time giving up because it didn't support anything I used, despite its tagline that it did. I am finding it more useful now but I still have some major complaints. The interface and menu commands are not intuitive and there is zero documentation tell you how to use it, neither within the app or on their website.
Launching the app, or starting up your computer if you have it set to boot at login, immediately starts Youtube from a hidden Slidepad. The first time was incredibly annoying seeing no apps open and no idea where the sound was coming from. I am guessing it's "Auto-mute" in its menu, but I'm taking a wild guess because there's NO DOCUMENTATION. And if that's my only option, I also don't want it to be running Youtube videos that I'm not aware of in the background.
Bringing up the Activity Monitor, anything that you have set up in Slidepad toolbar is actively running and using CPU, even if you haven't brought Slidepad out yet. While it's negligible, showing about .5-2% being used by each app, I don't understand why it doesn't put them to sleep, waking them up when I slide it out.
I will probably not have it start at login and launch it when I'm needing to multi-task between apps.