diff --git a/LICENSE b/LICENSE
index d959501..8f1caaf 100644
--- a/LICENSE
+++ b/LICENSE
@@ -12,6 +12,7 @@ MIT/X Consortium License
 © 2012 Christoph Lohmann <20h@r-36.net> 
 © 2012 David Galos <galosd83@students.rowan.edu> 
 © 2012 Robert Ransom <rransom.8774@gmail.com>
+© 2013 Jakob Kramer <jakob.kramer@gmx.de>
 
 Permission is hereby granted, free of charge, to any person obtaining a
 copy of this software and associated documentation files (the "Software"),
diff --git a/Makefile b/Makefile
index 9aeb5c4..7f91bac 100644
--- a/Makefile
+++ b/Makefile
@@ -61,6 +61,7 @@ SRC = \
 	sleep.c    \
 	sort.c     \
 	split.c    \
+	sponge.c   \
 	sync.c     \
 	tail.c     \
 	tee.c      \
diff --git a/sponge.1 b/sponge.1
new file mode 100644
index 0000000..dca95b9
--- /dev/null
+++ b/sponge.1
@@ -0,0 +1,14 @@
+.TH SPONGE 1 sbase\-VERSION
+.SH NAME
+sponge \- soak up standard input and write to a file
+.SH SYNOPSIS
+.B sponge
+.RI [ file ]
+.SH DESCRIPTION
+.B sponge
+reads stdin and writes to the specified file or stdout if no file is given.
+This makes it possible to easily create pipes which read from and write to
+the same file.
+
+If the given file is a symbolic link, it writes to the links's destination
+instead.
diff --git a/sponge.c b/sponge.c
new file mode 100644
index 0000000..456b2d4
--- /dev/null
+++ b/sponge.c
@@ -0,0 +1,51 @@
+/* See LICENSE file for copyright and license details. */
+#include <stdio.h>
+
+#include "text.h"
+#include "util.h"
+
+static void
+usage(void)
+{
+	eprintf("usage: %s [file]\n", argv0);
+}
+
+int
+main(int argc, char *argv[])
+{
+	FILE *fp, *tmpfp;
+	char *outname;
+
+	ARGBEGIN {
+	default:
+		usage();
+	} ARGEND;
+
+	switch(argc) {
+	case 0:
+		fp = stdout;
+		outname = "<stdout>";
+		break;
+	case 1:
+		outname = argv[0];
+		break;
+	default:
+		usage();
+	}
+
+	if(!(tmpfp = tmpfile()))
+		eprintf("tmpfile:");
+
+	concat(stdin, "<stdin>", tmpfp, "<tmpfile>");
+	rewind(tmpfp);
+
+	if(fp != stdout)
+		if(!(fp = fopen(argv[0], "w")))
+			eprintf("fopen %s:", argv[0]);
+	concat(tmpfp, "<tmpfile>", fp, outname);
+
+	fclose(fp);
+	fclose(tmpfp);
+
+	return 0;
+}