diff --git a/planetstack/tools/diff-opencloud.py b/planetstack/tools/diff-opencloud.py
new file mode 100644
index 0000000..a1f53d3
--- /dev/null
+++ b/planetstack/tools/diff-opencloud.py
@@ -0,0 +1,47 @@
+#! /usr/bin/python
+
+import base64
+import os
+import sys
+import subprocess
+import StringIO
+
+if len(sys.argv)<3:
+    print >> sys.stderr, "syntax: diff-opencloud <localfn> <remotehost:remotefn>"
+    sys.exit(-1)
+
+srcfn = sys.argv[1]
+dest = sys.argv[2]
+
+if not ":" in dest:
+    print >> sys.stderr, "malformed desthost:destfn"
+    sys.exit(-1)
+
+(hostname,destfn) = dest.split(":",1)
+
+if destfn.endswith("/"):
+    destfn = destfn + os.path.basename(srcfn)
+
+script = 'echo START; base64 %s' % destfn
+
+file("/tmp/script","w").write(script)
+
+p = subprocess.Popen(["ssh", "-A", hostname], stdin=subprocess.PIPE, stdout=subprocess.PIPE, stderr=subprocess.STDOUT)
+enctext = p.communicate(input=script)[0]
+
+enctext = enctext.split("START")[1]
+
+text = base64.b64decode(enctext)
+
+file("/tmp/diff-src","w").write(text)
+os.system("diff /tmp/diff-src %s" % srcfn)
+
+"""
+SRCPATHNAME=$1
+DESTHOSTNAME=$2
+DESTPATHNAME=$3
+echo "base64 -d -i > $DESTPATHNAME <<EOF" > /tmp/ssh-up            
+base64 $SRCPATHNAME >> /tmp/ssh-up   
+echo "EOF" >> /tmp/ssh-up
+ssh -A $DESTHOSTNAME < /tmp/ssh-up  
+"""