We are a small group (2) providing automation to various departments within the company...Ranging from file management, document scanning, file conversions, user application tools, etc...
We use Tcl/Tk for backend services (servers), desktop applications, gluing java, c, and c++ languages... Have been using Tcl/Tk since 1997...
We had developed a 3-tier model of delivering applications to the desktop. Have used and written various extensions to support our needs over the years.