SlackBuildsOrg/desktop/xvkbd

xvkbd is a virtual (graphical) keyboard program for X Window System which
provides facility to enter characters onto other clients (softwares) by
clicking on a keyboard displayed on the screen. This may be used for systems
without a hardware keyboard such as kiosk terminals or handheld devices. This
program also has facility to send characters specified as the command line
option to another client.