diff --git a/c/udpmsg/Makefile b/c/udpmsg/Makefile
new file mode 100644
index 0000000..abc55a9
--- /dev/null
+++ b/c/udpmsg/Makefile
@@ -0,0 +1,10 @@
+all: udpmsg udpmsgd
+
+udpmsg: udpmsg.c
+	$(CC) $(CFLAGS) $^ -o udpmsg
+
+udpmsgd: udpmsgd.c
+	$(CC) $(CFLAGS) $^ -o udpmsgd
+
+clean:
+	rm -f udpmsg udpmsgd
diff --git a/c/udpmsg/udpmsg.c b/c/udpmsg/udpmsg.c
new file mode 100644
index 0000000..7a343a6
--- /dev/null
+++ b/c/udpmsg/udpmsg.c
@@ -0,0 +1,121 @@
+/*
+ * udpmsg: send messages via UDP
+ */
+
+/*
+ * Copyright (c) 2006 Andreas Jaggi <andreas.jaggi@waterwave.ch>
+ * All rights reserved.
+ * 
+ * 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. The name of the author may not be used to endorse or promote products
+ *    derived from this software without specific prior written permission.
+ * 
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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 <stdlib.h>
+#include <unistd.h>
+#include <errno.h>
+#include <netinet/in.h>
+#include <arpa/inet.h>
+
+#include "udpmsg.h"
+
+const char usagemsg[] =
+	"usage: udpmsg -i <IP> -m <message>\n"
+	"\n"
+	"arguments:\n"
+	"    -i IP         send to host with address IP\n"
+	"    -m message    message to send\n"
+	" also: udpmsg -v    show version\n"
+	"       udpmsg -h    display this help\n"
+	"       udpmsg -l    display (BSD) license\n"
+	;
+
+const char versionmsg[] = "udpmsg 0.3\n";
+
+void usage ( );
+void version ( );
+
+int main ( int argc, char* argv[] ) {
+	int sock;
+	int tmp;
+	in_addr_t remote_addr = 0;
+	char* msg = NULL;
+	struct sockaddr_in *destination = NULL;
+
+	while ( (tmp = getopt(argc, argv, "i:m:hlv")) != -1 ) {
+		switch ( tmp ) {
+			case 'h':
+				usage();
+				exit(0);
+			case 'l':
+				license();
+				exit(0);
+			case 'v':
+				version();
+				exit(0);
+			case 'i':
+				remote_addr = inet_addr(optarg);
+				break;
+			case 'm':
+				msg = optarg;
+				break;
+		}
+	}
+
+	if ( (remote_addr == 0) || (msg == NULL) ) {
+		usage();
+		exit(-1);
+	}
+
+	sock = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP);
+	if ( sock < 0 ) {
+		showerror("socket");
+		exit(-1);
+	}
+
+	destination = alloca(sizeof(struct sockaddr_in));
+
+	destination->sin_family = AF_INET;
+	destination->sin_addr.s_addr = remote_addr;
+	destination->sin_port = UDPMSG_PORT;
+
+	tmp = sendto(sock, msg, strlen(msg)+1, 0, (struct sockaddr*)destination, sizeof(struct sockaddr_in));
+	if ( tmp < 0 ) {
+		showerror("sendto");
+		exit(-1);
+	}
+
+	tmp = close(sock);
+	if ( tmp < 0 ) {
+		showerror("close");
+		exit(-1);
+	}
+
+	exit(0);
+}
+
+void usage ( ) {
+	write(1, usagemsg, strlen(usagemsg));
+}
+
+void version ( ) {
+	write(1, versionmsg, strlen(versionmsg));
+}
diff --git a/c/udpmsg/udpmsg.h b/c/udpmsg/udpmsg.h
new file mode 100644
index 0000000..52b04ac
--- /dev/null
+++ b/c/udpmsg/udpmsg.h
@@ -0,0 +1,49 @@
+#ifndef _UDPMSG_H
+#define _UDPMSG_H
+
+#include <string.h>
+#include <unistd.h>
+
+#define UDPMSG_PORT 4321
+#define UDPMSG_LEN 512
+
+void showerror ( char* type ) {
+	char* errstr = strerror(errno);
+	write(1, type, strlen(type));
+	write(1, ": ", 2);
+	write(1, errstr, strlen(errstr));
+	write(1, "\n", 1);
+}
+
+const char licensemsg[] =
+	"rexec/rexecd is copyright (c) 2006 Andreas Jaggi <andreas.jaggi@waterwave.ch>\n"
+	"All rights reserved.\n"
+	"\n"
+	"Redistribution and use in source and binary forms, with or without\n"
+	"modification, are permitted provided that the following conditions\n"
+	"are met:\n"
+	"1. Redistributions of source code must retain the above copyright\n"
+	"   notice, this list of conditions and the following disclaimer.\n"
+	"2. Redistributions in binary form must reproduce the above copyright\n"
+	"   notice, this list of conditions and the following disclaimer in the\n"
+	"   documentation and/or other materials provided with the distribution.\n"
+	"3. The name of the author may not be used to endorse or promote products\n"
+	"   derived from this software without specific prior written permission.\n"
+	"\n"
+	"THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR\n"
+	"IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES\n"
+	"OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.\n"
+	"IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,\n"
+	"INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT\n"
+	"NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,\n"
+	"DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY\n"
+	"THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT\n"
+	"(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF\n"
+	"THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.\n"
+	;
+
+void license ( ) {
+	write(1, licensemsg, strlen(licensemsg));
+}
+
+#endif
diff --git a/c/udpmsg/udpmsgd.c b/c/udpmsg/udpmsgd.c
new file mode 100644
index 0000000..0a14bba
--- /dev/null
+++ b/c/udpmsg/udpmsgd.c
@@ -0,0 +1,101 @@
+/*
+ * udpmsgd: recieve messages via UDP
+ */
+
+/*
+ * Copyright (c) 2006 Andreas Jaggi <andreas.jaggi@waterwave.ch>
+ * All rights reserved.
+ * 
+ * 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. The name of the author may not be used to endorse or promote products
+ *    derived from this software without specific prior written permission.
+ * 
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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 <stdlib.h>
+#include <netinet/in.h>
+#include <errno.h>
+
+#include "udpmsg.h"
+
+const char usagemsg[] =
+	"usage: udpmsgd\n"
+	"\n"
+	" options: udpmsgd -v    show version\n"
+	"          udpmsgd -h    display this help\n"
+	"          udpmsgd -l    display (BSD) license\n"
+	;
+
+const char versionmsg[] = "udpmsgd 0.2\n";
+
+void usage ( );
+void version ( );
+
+int main ( int argc, char* argv[] ) {
+	int sock;
+	int tmp;
+	struct sockaddr_in *from;
+	struct sockaddr_in *local_addr;
+	socklen_t *fromlen;
+	char msg[UDPMSG_LEN+1];
+
+	sock = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP);
+	if ( sock < 0 ) {
+		showerror("socket");
+		exit(-1);
+	}
+
+	local_addr = alloca(sizeof(struct sockaddr_in));
+	local_addr->sin_family = AF_INET;
+	local_addr->sin_port = UDPMSG_PORT;
+	local_addr->sin_addr.s_addr = INADDR_ANY;
+
+	tmp = bind(sock, (struct sockaddr*)local_addr, sizeof(struct sockaddr_in));
+	if ( tmp < 0 ) {
+		showerror("bind");
+		exit(-1);
+	}
+
+	while ( 1 ) {
+		tmp = recvfrom(sock, msg, UDPMSG_LEN, 0, (struct sockaddr*)from, fromlen);
+		if ( tmp < 0 ) {
+			showerror("recvfrom");
+			exit(-1);
+		}
+		msg[tmp] = '\n';
+		write(1,msg,tmp+1);
+	}
+
+	tmp = close(sock);
+	if ( tmp < 0 ) {
+		showerror("close");
+		exit(-1);
+	}
+
+	exit(0);
+}
+
+void usage ( ) {
+	write(1, usagemsg, strlen(usagemsg));
+}
+
+void version ( ) {
+	write(1, versionmsg, strlen(versionmsg));
+}