diff --git a/.gitattributes b/.gitattributes
new file mode 100644
index 0000000..404c823
--- /dev/null
+++ b/.gitattributes
@@ -0,0 +1 @@
+src/IDF/version.php     export-subst
diff --git a/src/IDF/Middleware.php b/src/IDF/Middleware.php
index b836e25..028f412 100644
--- a/src/IDF/Middleware.php
+++ b/src/IDF/Middleware.php
@@ -87,6 +87,7 @@ class IDF_Middleware
                               'markdown' => 'IDF_Template_Markdown',
                               'showuser' => 'IDF_Template_ShowUser',
                               'ashowuser' => 'IDF_Template_AssignShowUser',
+                              'appversion' => 'IDF_Template_AppVersion',
                                             ));
         $params['modifiers'] = array_merge($params['modifiers'],
                                            array(
diff --git a/src/IDF/Template/AppVersion.php b/src/IDF/Template/AppVersion.php
new file mode 100644
index 0000000..00d6f2a
--- /dev/null
+++ b/src/IDF/Template/AppVersion.php
@@ -0,0 +1,61 @@
+<?php
+/* -*- tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+# ***** BEGIN LICENSE BLOCK *****
+# This file is part of InDefero, an open source project management application.
+# Copyright (C) 2011 Céondo Ltd and contributors.
+#
+# InDefero is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+# InDefero is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+#
+# ***** END LICENSE BLOCK ***** */
+
+/**
+ * AppVersion tag.
+ *
+ * Renders two meta tags that include the application's version and revision
+ */
+class IDF_Template_AppVersion extends Pluf_Template_Tag
+{
+    function start($file = 'IDF/version.php')
+    {
+        if (!Pluf::fileExists($file)) {
+            return;
+        }
+
+        $info = include_once($file);
+        if (!is_array($info)) {
+            return;
+        }
+
+        if (array_key_exists('version', $info)) {
+            echo '<meta name="indefero-version" content="'.$info['version'].'" />'."\n";
+        }
+
+        if (array_key_exists('revision', $info)) {
+            if (strpos($info['revision'], '$') !== false) {
+                $info['revision'] = 'unknown';
+                $cmd = Pluf::f('idf_exec_cmd_prefix', '').
+                       Pluf::f('git_path', 'git').
+                       ' log -1 --format=%H';
+
+                if (IDF_Scm::exec('IDF_Template_AppVersion::start', $cmd, $output)) {
+                    $info['revision'] = trim(@$output[0]);
+                }
+            }
+            echo '<meta name="indefero-revision" content="'.$info['revision'].'" />'."\n";
+        }
+    }
+}
+
diff --git a/src/IDF/templates/idf/base-full.html b/src/IDF/templates/idf/base-full.html
index d2e69fa..8e19345 100644
--- a/src/IDF/templates/idf/base-full.html
+++ b/src/IDF/templates/idf/base-full.html
@@ -32,6 +32,7 @@
   {block extraheader}{/block}
   <title>{block pagetitle}{$page_title|strip_tags}{/block}{if $project} - {$project.shortdesc}{/if}</title>
   <script type="text/javascript" src="{media '/idf/js/jquery-1.2.6.min.js'}"></script>
+  {appversion}
 </head>
 <body>
 <div id="{block docid}doc3{/block}">
diff --git a/src/IDF/templates/idf/base-simple.html b/src/IDF/templates/idf/base-simple.html
index 39c1a9b..8a0a3d5 100644
--- a/src/IDF/templates/idf/base-simple.html
+++ b/src/IDF/templates/idf/base-simple.html
@@ -32,6 +32,7 @@
   {block extraheader}{/block}
   <title>{block pagetitle}{$page_title|strip_tags}{/block}</title>
   <script type="text/javascript" src="{media '/idf/js/jquery-1.2.6.min.js'}"></script>
+  {appversion}
 </head>
 <body>
 <div id="{block docid}doc3{/block}" class="{block docclass}yui-t3{/block}">
diff --git a/src/IDF/templates/idf/base.html b/src/IDF/templates/idf/base.html
index 0d3cfb1..cfddd85 100644
--- a/src/IDF/templates/idf/base.html
+++ b/src/IDF/templates/idf/base.html
@@ -32,6 +32,7 @@
   {block extraheader}{/block}
   <title>{block pagetitle}{$page_title|strip_tags}{/block}{if $project} - {$project.shortdesc}{/if}</title>
   <script type="text/javascript" src="{media '/idf/js/jquery-1.2.6.min.js'}"></script>
+  {appversion}
 </head>
 <body>
 <div id="{block docid}doc3{/block}" class="{block docclass}yui-t3{/block}">
diff --git a/src/IDF/templates/idf/gadmin/base.html b/src/IDF/templates/idf/gadmin/base.html
index 15e830d..4f8a745 100644
--- a/src/IDF/templates/idf/gadmin/base.html
+++ b/src/IDF/templates/idf/gadmin/base.html
@@ -31,6 +31,7 @@
   {block extraheader}{/block}
   <title>{block pagetitle}{$page_title|strip_tags}{/block}</title>
   <script type="text/javascript" src="{media '/idf/js/jquery-1.2.6.min.js'}"></script>
+  {appversion}
 </head>
 <body>
 <div id="{block docid}doc3{/block}" class="{block docclass}yui-t3{/block}">
diff --git a/src/IDF/version.php b/src/IDF/version.php
new file mode 100644
index 0000000..cd5ca11
--- /dev/null
+++ b/src/IDF/version.php
@@ -0,0 +1,5 @@
+<?php
+return array(
+    'version'  => '1.1-dev',
+    'revision' => '$Format:%H$',
+);
