diff --git a/src/m_wsgipy3.php b/src/m_wsgipy3.php
new file mode 100644
index 0000000..5372fd0
--- /dev/null
+++ b/src/m_wsgipy3.php
@@ -0,0 +1,141 @@
+<?php
+
+/**
+ * Class for integrating mod_wsgi (py3) functionality with AlternC.
+ */
+class m_wsgipy3 {
+
+    function hook_subdomain_type_extra_fields($domain_type, $domain, $subdomain_id = FALSE) {
+        global $hooks;
+        $result = array();
+        if ($this->domain_type_is_python($domain_type)) {
+            $ehe = ehe($domain_type['name']);
+            $default_values = $this->get_subdomain_settings($subdomain_id);
+
+            $value = $subdomain_id ? ehe($default_values['venv']) : "";
+            $title = ehe(_('Virtual Environment'));
+            $result['venv'] = <<<EOF
+<label for="venv_{$ehe}">{$title}</label><input type="text" class="int" name="venv_{$ehe}" id="venv_{$ehe}" value="{$value}" size="28" onKeyPress="getElementById('r_{$ehe}').checked=true;"/>
+EOF;
+
+            # AlternC front end functions output directly, but here we catch it
+            # for later.
+            ob_start();
+            display_browser($default_values['venv'], "venv_{$domain_type['name']}");
+            $result['venv'] .= ob_get_contents();
+            ob_end_clean();
+
+            $value = $subdomain_id ? ehe($default_values['app_subdir']) : "";
+            $title = ehe(_('Application sub-directory'));
+            $result['app_subdir'] = <<<EOF
+<label for="venv_{$ehe}">{$title}</label><input type="text" class="int" name="app_subdir_{$ehe}" id="app_subdir_{$ehe}" value="{$value}" size="28" onKeyPress="getElementById('r_{$ehe}').checked=true;"/>
+EOF;
+        }
+        return $result;
+    }
+
+    function domain_type_is_python($domain_type) {
+        global $hooks;
+        $result = $hooks->invoke('hook_domain_type_is_python', array($domain_type));
+        foreach ($result as $module => $r) {
+            if (!empty($r)) {
+                return TRUE;
+            }
+        }
+        return FALSE;
+    }
+
+    function hook_domain_type_is_python($domain_type) {
+        if ($domain_type['name'] == 'wsgi') {
+            return array(TRUE);
+        }
+    }
+
+    /**
+     * Gets the python settings for a given subdomain.
+     *
+     * @param $subdomain_id
+     *
+     * @returns array
+     *   An array of python settings indexed by key.
+     */
+    function get_subdomain_settings($subdomain_id) {
+        global $db;
+        $db->query('SELECT * FROM subdomain_wsgi WHERE id = ?;', array($subdomain_id));
+        if (!$db->next_record()) {
+            return FALSE;
+        }
+        return array(
+            'venv' => $db->f('venv'),
+            'app_subdir' => $db->f('app_subdir'),
+        );
+    }
+
+    /**
+     * Sets the python settings for a given subdomain.
+     *
+     * @param $subdomain_id
+     * @param $venv
+     * @param $app_subdir
+     *
+     * @returns bool | array
+     */
+    function set_subdomain_settings($subdomain_id, $venv = '', $app_subdir = '') {
+        global $db;
+        if ($this->get_subdomain_settings($subdomain_id) !== FALSE) {
+            $db->query('UPDATE subdomain_wsgi SET venv = ?, app_subdir = ? WHERE id = ?;',
+                       array($venv, $app_subdir, $subdomain_id));
+        }
+        else {
+            $db->query('INSERT INTO subdomain_wsgi (id, venv, app_subdir) VALUES (?, ?, ?);',
+                       array($subdomain_id, $venv, $app_subdir));
+        }
+    }
+
+    function delete_subdomain_settings($subdomain_id) {
+        global $db;
+        if ($subdomain_id > 0) {
+            $db->query('DELETE FROM subdomain_wsgi WHERE id = ?;', array($subdomain_id));
+        }
+    }
+
+    function hook_dom_del_subdomain($subdomain_id) {
+        $this->delete_subdomain_settings($subdomain_id);
+    }
+
+    function hook_dom_subdoedit_fields($type = NULL) {
+        global $dom;
+        if ($type) {
+            return array(
+                "venv_{$type}" => array('post', 'string', ''),
+                "app_subdir_{$type}" => array('post', 'string', ''),
+            );
+        }
+    }
+
+    function hook_dom_subdoedit_set($context) {
+        // Deletion of old data is handled later, when update_domains is run.
+        // @TODO: Validation
+        $valid = TRUE;
+        // Set
+        if ($valid) {
+            $this->set_subdomain_settings(
+                $context['sub_domain_id'],
+                $context["venv_{$context['type']}"],
+                $context["app_subdir_{$context['type']}"]
+            );
+        }
+    }
+
+    function hook_web_template_tokens($subdomain) {
+        $s = $this->get_subdomain_settings($subdomain['id']);
+        if ($s) {
+            return array(
+                '%%VENV%%' => $s['venv'],
+                '%%APP_SUBDIR%%' => $s['app_subdir'],
+            );
+        }
+    }
+}
+
+?>