diff --git a/protobuf/.gitignore b/protobuf/.gitignore
new file mode 100644
index 0000000..d055e9a
--- /dev/null
+++ b/protobuf/.gitignore
@@ -0,0 +1,4 @@
+/bin/protoc
+/include/
+/lib/
+/tmp/
diff --git a/protobuf/setup b/protobuf/setup
new file mode 100755
index 0000000..e18f996
--- /dev/null
+++ b/protobuf/setup
@@ -0,0 +1,14 @@
+#!/bin/bash
+
+set -e
+set -x
+
+TOP=$PWD
+mkdir -p tmp
+pushd tmp
+test -f protobuf-2.4.1.tar.bz2 || curl -O http://protobuf.googlecode.com/files/protobuf-2.4.1.tar.bz2
+test -d protobuf-2.4.1 || tar xjvf protobuf-2.4.1.tar.bz2
+pushd protobuf-2.4.1
+./configure --prefix=$TOP
+make
+make install
diff --git a/protobuf/src/tutorial/addressbook.proto b/protobuf/src/tutorial/addressbook.proto
new file mode 100644
index 0000000..bb87f1a
--- /dev/null
+++ b/protobuf/src/tutorial/addressbook.proto
@@ -0,0 +1,24 @@
+package tutorial;
+
+message Person {
+    required string name = 1;
+    required int32 id = 2;
+    optional string email = 3;
+
+    enum PhoneType {
+        MOBILE = 0;
+        HOME = 1;
+        WORK = 2;
+    }
+
+    message PhoneNumber {
+        required string number = 1;
+        optional PhoneType type = 2 [default = HOME];
+    }
+
+    repeated PhoneNumber phone = 4;
+}
+
+message AddressBook {
+    repeated Person person = 1;
+}