Evolus
Pencil
FreeMake diagrams and GUI prototyping on your Windows PC.
Windows
Pencil for Firefox
FreeDesign diagrams and make GUI prototyping on your Firefox browser.
Windows
Pencil for Fedora
FreeMake diagrams and GUI prototyping on your Linux system.
LinuxPencil for Linux
FreeMake diagrams and GUI prototyping on your Linux system.
Linux