Downloading ProJob 2.4 from our website was free. The actual developer of the free program is Prolec Ltd. The program belongs to Photo & Graphics Tools.
From the developer:
ProJob is a free software utility supplied by Prolec for use with Digital Terrain Maps (DTM). Its principle function is to take one of the many standard industry formats for these DTMs and convert it into a .tri file. A .
You may want to check out more software, such as Montagne, Wire Pilot Plugin or ImageVisu, which might be related to ProJob.