You all know that synaptic log each install/update/remove operations, at least for the amount of time you set up in your synaptic preferences.
I found myself sometimes using apt-get update / apt-get dist-upgrade ... guess what ... that's not logged in synaptic log files ... of course.
How to list the latest installed packages ? The following command will provide the list of the latest installed/upgraded packages ... the last 100 packages to be precise:
rpm -qa --last | head -100
Still the removed one are missed, but it is better than nothing!