GeotoolKit

Mdweb 2   (Compare Project)

License: Unknown

Puzzle-GIS   (Compare Project)

License: lgpl3

Constellation   (Compare Project)

Mostly written in Java

License: apache_2

MapFaces   (Compare Project)

License: lgpl3

JOSM   (Compare Project)

Mostly written in Java

License: gpl

gvSIG Desktop 1   (Compare Project)

License: gpl

EasySDI   (Compare Project)

License: gpl3

OpenStreetMap   (Compare Project)

License: Unknown

GRASS GIS   (Compare Project)

Mostly written in C

License: gpl

Marble   (Compare Project)

Mostly written in C++

License: lgpl