Thank you, @Nergal
I am a computer expert and unfortunately the "hotline" of many friends and family members.
Here <strong>Speccy Portable</strong> would be useful to get their system specs.
Recuva Portable would be very useful to recover files they have accidental deleted.
And for those tasks a portable application would be the best option, because I don't have to install anything on their machines (the PC of my brother crashed, and he blamed me because I installed something, luckily it was just a portable application, so I could explain, that it was not my fault).
I must admit, that my brother calls me at least 2 times a week for PC "issues" and that I am happy that he finds the power switch himself now.
Therefore, portable versions are extremely important for my "supporting noobs and getting nothing for it" job.
This is the <strong>second reason</strong> (besides my work PC) why I need portable versions.
So, please don't forget Speccy Portable.