[mapserver-users] [OFF-TOPIC]FreeGIS like ArcFamily

[EDUARDO PATTO KANEGAE]

is there any software or set of software, under the free-software, that
would be possible to:
 
- import data from CAD files( dxf, dgn)
- work on .SHAPEFILE format
- generates TIN/DTM
- generates 3D Visualization of DTM surfaces
- interpolation of point values
 
well, i think the right question may be: is there a way of 
    using free-software for making the same results( or nearest) that ESRI
Arc* does?
 
regards
 
 
Eduardo Patto Kanegae
eduardopk at vcp.com.br <mailto:eduardopk at vcp.com.br> 
Time Planejamento - UNIDADE LA - Ramal 9126
eduardo at scopotecnologia.com.br <mailto:eduardo at scopotecnologia.com.br> 
http://www.scopotecnologia.com.br <http://www.scopotecnologia.com.br/>