1)   GIS ObjectLand 2.6.5
GIS ObjectLand is a universal Geographic Information System for Windows. Key features: vector-raster maps; multiuser data editing; import/export for MIF/MID, SHP, DXF, DBF, CSV; access permissions for users; using other DBMS (ODBC); COM interfaces.

 2)   TOPOWIN 10.21
TOPOWIN is a state-wide register of the German topographic cartographies and of localities with geo references in different coordinate systems. It also is a topographic information system.

 3)   Register AMTLICHE TOPOGRAFISCHE KARTEN 2.00
A volume of data with map names, map numbers, corner coordinates and completing data of all official topographic maps of the Federal Republic of Germany. TK25, TK50, TK100 and TKUe200.

 4)   RTOPO 1.8
Is useful in topography for representing and editing 3D points (by 3DPOLY, SPLINE OR BLOCK entities) and for triangulation, isolines, projections and sections. RCAD 2.0 core provides OpenGL real-time orbit, pan, zoom, shading and lighting.

 5)   TRIANGULATION, ISOLINES, VOLUME & 3DINTERSECTION 3.51
TRIANGULATION, ISOLINES, VOLUME and 3DINTERSECTION; 4 functions for IntelliCAD