NetXMS source code has mixed licensing - most libraries licensed under 
GNU Lesser General Public License (LGPL), and rest of the NetXMS components
licensed under GNU General Public Lcense (GPL). There are also various
third party libraries bundled with NetXMS source code, with different
licensing. Detailed list of licensing per component is following:

NetXMS components:

libnetxms       LGPL
libnxcl         LGPL
libnxdb         LGPL
libnxlp         LGPL
libnxmap        LGPL
libnxmb         GPL
libnxsl         LGPL
libnxsnmp       LGPL
libnxsrv        LGPL
nxagentd        GPL
nxalarm         GPL
nxav            GPL
nxcon           GPL
nxcptest        GPL
nxevent         GPL
nxflowd         GPL
nxlexer         GPL
nxlptest        GPL
nxmibc          GPL
nxnotify        GPL
nxpush          GPL
nxscript        GPL
nxsms           GPL
nxsnmpget       GPL
nxsnmpset       GPL
nxsnmpwalk      GPL
nxuilib         GPL

all subagents   GPL
all DB drivers  GPL
all notification channel drivers GPL


Third party components bundled with NetXMS:

libexpat        BSD-like
libipfix        LGPL
sqlite          BSD-like
zlib            BSD-like


Third party code within NetXMS:

ICE		public domain