Software reviews, so to speak. Except the software is historical or uncommon. In other words, software you are unlikely to have seen, and probably unlikely to want to see.
A note on copyrights
I assume that screenshots of software inherit the copyright from that software. In case of non-free software, I believe distributing screenshots is fair use, as vieweing screenshots cannot replace using the software, and therefore cannot affect its value.
If you are a copyright holder and you think otherwise, please contact me.