Dear Matthias,
I can provide a Flatpak for x86_64 and according to [1] this covers click-to-install for "Fedora 25, OpenSUSE Tumbleweed, Debian Testing, Arch, and Mageia Cauldron" as well as a bit more involved installation procedure for Ubuntu 16.04+.
I see so the Gnome version of snaps, msi and dmg
If it helps, I just created https://inkscape.org/en/~matze …
I've upgraded your account. You should set a GPG public key and sign your packages when you upload them. Please be mindful that your quota is set to 2GB, but the server does have limited space so please remove old uploads where possible.
Let us know when you have a package upload you're happy with so we can link to them from the downloads pages.
Best Regards, Martin Owens Giver of Quota, Taker of Usernames