@ozboomer :-
It's entirely up to you where you put it. As a true, self-contained portable app it will literally run from anywhere. With a small package like LaZPaint, it'll make hardly any difference......but I definitely recommend this for things like the browsers.....where the browser itself is pretty big to start with, and then on top of that, cache can quickly grow to GB in size if you don't take pains to control it.
All of which bloats the 'save' like crazy. Some Puppians like to use the save just for personal config/settings, and keep it as tiny as possible; whereas others - like me! - couldn't care less (with 5TB+ of storage & 32GB RAM, I am NOT short of space)........ "Horses for courses", y'know?
No; no special reasons (not technical or operational, anyway).....except for the fact that these will emulate the Windows PortableApps eco-system, where you can run your portables from a flash drive (if you want). And that's what I was aiming for from the very first attempts at doing this. A bunch of people helped along the way - credit where credit's due - and I've tried to hone the way they work as time has gone by, to everybody's benefit.
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It's all about space-saving, and ease-of-use. As one of the old crew, from the early days, I hope you can appreciate this aspect of why I do this. I long ago came to the conclusion that, where folks run multiple distros - AND run pretty much the same programs in each - that one hell of a lot of storage space gets wasted due to duplication. Duplicated apps. Duplicated .configs......and those .configs need setting-up afresh in each distro. Not only that, they don't just waste space....they waste a huge chunk of your time doing so. How much better would it be to simply link to a ready set-up, ready to go app in a new distro?
This is what I did in my last yearly re-install of Windows XP. Instead of installing all my usual programs, I populated XP entirely with Windows portable apps.....and ya know what? That was the smoothest, most glitch-free 12 months I ever had with XP. That last year, it was a joy to use....but it still got the boot. I was still fed-up with it!
(I do have an ulterior motive, though. The desktop rig might be just 2-3 years old, with modern hardware, tons of RAM and buckets of storage space........but I also run a 15-yr old Dell Latitude lappie. Just 4 GB RAM. 120 GB SSD. This gets used in the front room of an evening when I keep Mama company. The same principle applies; saving space, keeping Puppy trim'n'tidy, and sharing apps between the pair of Pups that live there....)
Mike.