Well, I forgot to mention I am truly impressed by your list.

POL-on and RAD-on are quite specialized pieces of software that even in Poland aren’t known very well. And the names come from polish words without “-ium”, so they could not not pop up in english search results. Surely there are more niche pieces neither of us stand a chance to find easily

84 - Po - Polonium - Polish government system for information about higher education and science (POL-on) - https://polon.nauka.gov.pl/en/

86 - Rn - Radonium - Reporting system based on information collected in POL-on and other polish sources about science in Poland - https://radon.nauka.gov.pl/

“demand”