Source URLs for GoldBug Messenger: 
integrated in the Spot-on SVN:
http://sourceforge.net/p/spot-on/code/HEAD/tree/
svn checkout svn://svn.code.sf.net/p/spot-on/code/ spot-on-code
http://spot-on.sf.net
http://goldbug.sf.net

Compiling:

Requirements: Qt 4.8.x, libGeoIP, libcrypto, libeay, libgcrypt,
libgpg-error, libssl. Qt 5.x is also supported.

If header (h) or interface (ui) files have changed, please perform
a distclean before building Spot-On.

Absolute cleaning:
make distclean or mingw32-make distclean

FreeBSD:
qmake -o Makefile spot-on.freebsd.pro
gmake or make

Linux:
qmake -o Makefile spot-on.pro
make

OS X:
qmake -spec macx-g++ -o Makefile spot-on.osx.pro
make

Windows:
qmake -o Makefile spot-on.win.pro
make or mingw32-make

https://sourceforge.net/p/spot-on/code/HEAD/tree/
GB 0.17: SVN 3887