Looking at the page, the only software which is labeled as open source, is Archicad.
Looking at their website and on wikipedia, it seems to be proprietary though.
I cannot see any other software on the page, which isn't proprietary.
As for FLOSS CAD, I use FreeCAD quite a lot. It has a BIM workbench, which I have used a bit and which seems very capable.
It can do all the things you are requesting.
FreeCAD can be a bit frustrating to work with, but it is an amazing piece of software, which has improved tremendously in the couple of years I have used it.
You should at least give us an introduction, like maybe: "Cryptids are Turing Machines whose behavior (when started on a blank tape) can be described completely by a relatively simple mathematical rule, but where that rule falls into a class of unsolved (and presumed hard) mathematical problems."
There is some merit in thinking of it as a transmission only device.
That is, it cannot store any data, but deconstructs on one end and has to transmit and reconstruct on the other end immediately, because the amount of data is infinitely high.
Omhandlende geo-fencing og låse på tog i Polen - i software og baseret på lokation hos en ikke godkendt reperatør - og en gruppe der finder ud af hvad der foregår.
They do ask for donations, and what a time to donate, to show that moral and human choices should be weighted as they have been done in this situation!
It's lovely! Just went for a walk (bit wobbly) in the snow. So pretty!