diff --git a/system/ntpc/.gitignore b/system/ntpc/.gitignore
new file mode 100644
index 000000000..fa1ec7579
--- /dev/null
+++ b/system/ntpc/.gitignore
@@ -0,0 +1,11 @@
+/Make.dep
+/.depend
+/.built
+/*.asm
+/*.obj
+/*.rel
+/*.lst
+/*.sym
+/*.adb
+/*.lib
+/*.src
diff --git a/system/ntpc/Kconfig b/system/ntpc/Kconfig
new file mode 100644
index 000000000..c9f6b52e3
--- /dev/null
+++ b/system/ntpc/Kconfig
@@ -0,0 +1,25 @@
+#
+# For a description of the syntax of this configuration file,
+# see the file kconfig-language.txt in the NuttX tools repository.
+#
+
+config SYSTEM_NTPC
+	bool "NTP Daemon Commands"
+	default n
+	select NETUTILS_NTPCLIENT
+	depends on NET_UDP
+	---help---
+		Enble the NTP client 'start' and 'stop' commands
+
+
+if SYSTEM_NTPC
+
+config SYSTEM_NTPC_PRIORITY
+	int "NTPC task priority"
+	default 100
+
+config SYSTEM_NTPC_STACKSIZE
+	int "NTPC stack size"
+	default 2048
+
+endif
diff --git a/system/ntpc/Make.defs b/system/ntpc/Make.defs
new file mode 100644
index 000000000..07ab398c9
--- /dev/null
+++ b/system/ntpc/Make.defs
@@ -0,0 +1,39 @@
+############################################################################
+# apps/system/ntpc/Make.defs
+# Adds selected applications to apps/ build
+#
+#   Copyright (C) 2017 Gregory Nutt. All rights reserved.
+#   Author: Gregory Nutt <gnutt@nuttx.org>
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions
+# are met:
+#
+# 1. Redistributions of source code must retain the above copyright
+#    notice, this list of conditions and the following disclaimer.
+# 2. Redistributions in binary form must reproduce the above copyright
+#    notice, this list of conditions and the following disclaimer in
+#    the documentation and/or other materials provided with the
+#    distribution.
+# 3. Neither the name NuttX nor the names of its contributors may be
+#    used to endorse or promote products derived from this software
+#    without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+# FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+# COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+# OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+# AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+# POSSIBILITY OF SUCH DAMAGE.
+#
+############################################################################
+
+ifeq ($(CONFIG_SYSTEM_NTPC),y)
+CONFIGURED_APPS += system/ntpc
+endif
diff --git a/system/ntpc/Makefile b/system/ntpc/Makefile
new file mode 100644
index 000000000..f30857d41
--- /dev/null
+++ b/system/ntpc/Makefile
@@ -0,0 +1,155 @@
+############################################################################
+# apps/system/ntpc/Makefile
+#
+#   Copyright (C) 2017 Gregory Nutt. All rights reserved.
+#   Author: Gregory Nutt <gnutt@nuttx.org>
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions
+# are met:
+#
+# 1. Redistributions of source code must retain the above copyright
+#    notice, this list of conditions and the following disclaimer.
+# 2. Redistributions in binary form must reproduce the above copyright
+#    notice, this list of conditions and the following disclaimer in
+#    the documentation and/or other materials provided with the
+#    distribution.
+# 3. Neither the name NuttX nor the names of its contributors may be
+#    used to endorse or promote products derived from this software
+#    without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+# FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+# COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+# OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+# AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+# POSSIBILITY OF SUCH DAMAGE.
+#
+############################################################################
+
+-include $(TOPDIR)/.config
+-include $(TOPDIR)/Make.defs
+include $(APPDIR)/Make.defs
+
+# NTPC address renewal built-in application info
+
+CONFIG_SYSTEM_NTPC_PRIORITY ?= SCHED_PRIORITY_DEFAULT
+CONFIG_SYSTEM_NTPC_STACKSIZE ?= 2048
+
+APPNAME1 = ntpstart
+APPNAME2 = ntpstop
+PRIORITY = $(CONFIG_SYSTEM_NTPC_PRIORITY)
+STACKSIZE = $(CONFIG_SYSTEM_NTPC_STACKSIZE)
+
+PROGNAME1 = ntpstart$(EXEEXT)
+PROGNAME2 = ntpstop$(EXEEXT)
+
+# NTPC address renewal
+
+ASRCS =
+CSRCS =
+MAINSRC1 = ntpcstart_main.c
+MAINSRC2 = ntpcstop_main.c
+MAINSRC = $(MAINSRC1) $(MAINSRC2)
+
+AOBJS = $(ASRCS:.S=$(OBJEXT))
+COBJS = $(CSRCS:.c=$(OBJEXT))
+MAINOBJ1 = $(MAINSRC1:.c=$(OBJEXT))
+MAINOBJ2 = $(MAINSRC2:.c=$(OBJEXT))
+MAINOBJ = $(MAINOBJ1) $(MAINOBJ2)
+
+SRCS = $(ASRCS) $(CSRCS) $(MAINSRC)
+OBJS = $(AOBJS) $(COBJS)
+
+ifneq ($(CONFIG_BUILD_KERNEL),y)
+  OBJS += $(MAINOBJ)
+endif
+
+ifeq ($(CONFIG_WINDOWS_NATIVE),y)
+  BIN = ..\..\libapps$(LIBEXT)
+else
+ifeq ($(WINTOOL),y)
+  BIN = ..\\..\\libapps$(LIBEXT)
+else
+  BIN = ../../libapps$(LIBEXT)
+endif
+endif
+
+ifeq ($(WINTOOL),y)
+  INSTALL_DIR = "${shell cygpath -w $(BIN_DIR)}"
+else
+  INSTALL_DIR = $(BIN_DIR)
+endif
+
+ROOTDEPPATH = --dep-path .
+
+# Common build
+
+VPATH = 
+
+all: .built
+.PHONY: clean depend distclean
+
+$(AOBJS): %$(OBJEXT): %.S
+	$(call ASSEMBLE, $<, $@)
+
+$(COBJS) $(MAINOBJ): %$(OBJEXT): %.c
+	$(call COMPILE, $<, $@)
+
+.built: $(OBJS)
+	$(call ARCHIVE, $(BIN), $(OBJS))
+	@touch .built
+
+ifeq ($(CONFIG_BUILD_KERNEL),y)
+$(BIN_DIR)$(DELIM)$(PROGNAME1): $(OBJS) $(MAINOBJ1)
+	@echo "LD: $(PROGNAME1)"
+	$(Q) $(LD) $(LDELFFLAGS) $(LDLIBPATH) -o $(INSTALL_DIR)$(DELIM)$(PROGNAME1) $(ARCHCRT0OBJ) $(MAINOBJ1) $(LDLIBS)
+	$(Q) $(NM) -u  $(INSTALL_DIR)$(DELIM)$(PROGNAME1)
+
+$(BIN_DIR)$(DELIM)$(PROGNAME2): $(OBJS) $(MAINOBJ2)
+	@echo "LD: $(PROGNAME2)"
+	$(Q) $(LD) $(LDELFFLAGS) $(LDLIBPATH) -o $(INSTALL_DIR)$(DELIM)$(PROGNAME2) $(ARCHCRT0OBJ) $(MAINOBJ2) $(LDLIBS)
+	$(Q) $(NM) -u  $(INSTALL_DIR)$(DELIM)$(PROGNAME2)
+
+install: $(BIN_DIR)$(DELIM)$(PROGNAME1)  $(BIN_DIR)$(DELIM)$(PROGNAME2)
+
+else
+install:
+
+endif
+
+ifeq ($(CONFIG_NSH_BUILTIN_APPS),y)
+$(BUILTIN_REGISTRY)$(DELIM)$(APPNAME1)_main.bdat: $(DEPCONFIG) Makefile
+	$(call REGISTER,$(APPNAME1),$(PRIORITY),$(STACKSIZE),$(APPNAME1)_main)
+
+$(BUILTIN_REGISTRY)$(DELIM)$(APPNAME2)_main.bdat: $(DEPCONFIG) Makefile
+	$(call REGISTER,$(APPNAME2),$(PRIORITY),$(STACKSIZE),$(APPNAME2)_main)
+
+context: $(BUILTIN_REGISTRY)$(DELIM)$(APPNAME1)_main.bdat $(BUILTIN_REGISTRY)$(DELIM)$(APPNAME2)_main.bdat
+else
+context:
+endif
+
+.depend: Makefile $(SRCS)
+	@$(MKDEP) $(ROOTDEPPATH) "$(CC)" -- $(CFLAGS) -- $(SRCS) >Make.dep
+	@touch $@
+
+depend: .depend
+
+clean:
+	$(call DELFILE, .built)
+	$(call CLEAN)
+
+distclean: clean
+	$(call DELFILE, Make.dep)
+	$(call DELFILE, .depend)
+
+-include Make.dep
+.PHONY: preconfig
+preconfig:
diff --git a/system/ntpc/ntpcstart_main.c b/system/ntpc/ntpcstart_main.c
new file mode 100644
index 000000000..43ae234c7
--- /dev/null
+++ b/system/ntpc/ntpcstart_main.c
@@ -0,0 +1,70 @@
+/****************************************************************************
+ * system/ntpc/ntpcstart_main.c
+ *
+ *   Copyright (C) 2017 Gregory Nutt. All rights reserved.
+ *   Author: Gregory Nutt <gnutt@nuttx.org>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ * 3. Neither the name NuttX nor the names of its contributors may be
+ *    used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ ****************************************************************************/
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+
+#include <stdlib.h>
+#include <stdio.h>
+
+#include "netutils/ntpclient.h"
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * ntpcstart_main
+ ****************************************************************************/
+
+#ifdef CONFIG_BUILD_KERNEL
+int main(int argc, FAR char *argv[])
+#else
+int ntpcstart_main(int argc, char *argv[])
+#endif
+{
+  int pid = ntpc_start();
+  if (pid < 0)
+    {
+      fprintf(stderr, "ERROR: ntpc_start() failed\n");
+      return EXIT_FAILURE;
+    }
+
+  printf("Started the NTP daemon as PID=%d\n", pid);
+  return EXIT_SUCCESS;
+}
diff --git a/system/ntpc/ntpcstop_main.c b/system/ntpc/ntpcstop_main.c
new file mode 100644
index 000000000..06627efaf
--- /dev/null
+++ b/system/ntpc/ntpcstop_main.c
@@ -0,0 +1,70 @@
+/****************************************************************************
+ * system/ntpc/ntpc_main.c
+ *
+ *   Copyright (C) 2017 Gregory Nutt. All rights reserved.
+ *   Author: Gregory Nutt <gnutt@nuttx.org>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ * 3. Neither the name NuttX nor the names of its contributors may be
+ *    used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ ****************************************************************************/
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+
+#include <stdlib.h>
+#include <stdio.h>
+
+#include "netutils/ntpclient.h"
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * ntpcstop_main
+ ****************************************************************************/
+
+#ifdef CONFIG_BUILD_KERNEL
+int main(int argc, FAR char *argv[])
+#else
+int ntpcstop_main(int argc, char *argv[])
+#endif
+{
+  int ret = ntpc_stop();
+  if (ret < 0)
+    {
+      fprintf(stderr, "ERROR: ntpc_stop() failed\n");
+      return EXIT_FAILURE;
+    }
+
+  printf("Stopped the NTP daemon\n");
+  return EXIT_SUCCESS;
+}