GNU Gama is a project dedicated to adjustment of local geodetic
networks. It is intended for use with traditional geodetic
observations, which are still used and needed in special measurements,
like underground or high precision engineering observations.

Qgama is a Qt based graphical user interface (GUI) for GNU Gama
adjustment, in which XML input is complemented with a database. The
most simple case is Sqlite3 file database, which does not need any
special knowledge from the user.

http://www.gnu.org/software/gama/qgama

Precompiled binaries of qgama.exe for windows are distributed from
this directory, together with a command line program gama-local.exe,
from sub-folder /bin of the distribution zip file.