Pencil is an open-source GUI prototyping tool.
- Well, I was looking for a some kind of prototyping tool for Linux (I’m not a long term designer), and found this: https://alternativeto.net/software/pencil-project/.
- This https://github.com/Alecaddd/Akira also, but it’s in early development.
There are not so many prototyping programs for Linux.
For Pencil, there is two packages in AUR: https://aur.archlinux.org/packages/pencil/ and https://aur.archlinux.org/packages/evolus-pencil-bin/.
The first has more deps than the second, but I’m not a packaging expert, I don’t know why.
The other option i’ve found is WireframeSketcher, but is not FOSS.