Pencil
Pencil is built for the purpose of providing a free and open-source GUI prototyping tool that people can easily install and use to create mockups in popular desktop platforms.
<package
id="pencil"
name="Pencil"
revision="%VERSION%"
priority="1"
reboot="false">
<variable name="VERSION" value="2.0.5" />
<variable architecture="x86" name="progfiles" value="%PROGRAMFILES%" />
<variable architecture="x64" name="progfiles" value="%PROGRAMFILES(X86)%" />
<check type="uninstall" condition="exists" path="Pencil" />
<install cmd='%SOFTWARE%\pencil\Pencil-%VERSION%.win32.installer.exe /S '/>
<upgrade include='install' />
<remove cmd='"%PROGFILES%\Evolus\Pencil\Uninstall.exe" /S '/>
</package>