diff --git a/conlite/classes/class.i18n.php b/conlite/classes/class.i18n.php
new file mode 100644
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+++ b/conlite/classes/class.i18n.php
@@ -0,0 +1,376 @@
+<?php
+/**
+ * This file contains the the I18N class.
+ *
+ * @package Core
+ * @subpackage I18N
+ * @author Murat Purc <murat@purc.de>
+ * @copyright four for business AG <www.4fb.de>
+ * @license http://www.contenido.org/license/LIZENZ.txt
+ * @link http://www.4fb.de
+ * @link http://www.contenido.org
+ */
+
+defined('CON_FRAMEWORK') || die('Illegal call: Missing framework initialization - request aborted.');
+
+/**
+ * Internationalization (i18n) class.
+ *
+ * @package Core
+ * @subpackage I18N
+ */
+class cI18n {
+    
+    const i18n_DEFAULT_DOMAIN = "conlite";
+
+    /**
+     * i18n related assoziative data cache.
+     *
+     * @var array
+     */
+    protected static $_i18nData = array(
+        'language' => NULL,
+        'domains' => array(),
+        'files' => array(),
+        'cache' => array()
+    );
+
+    /**
+     * Initializes the i18n.
+     *
+     * @param string $localePath
+     *         Path to the locales
+     * @param string $langCode
+     *         Language code to set
+     * @param string $domain [optional]
+     *         Language domain
+     */
+    public static function init($localePath, $langCode, $domain = self::i18n_DEFAULT_DOMAIN) {
+        if (function_exists('bindtextdomain')) {
+            // Bind the domain 'contenido' to our locale path
+            bindtextdomain($domain, $localePath);
+
+            // Set the default text domain to 'contenido'
+            textdomain($domain);
+
+            // Half brute-force to set the locale.
+            if (!ini_get('safe_mode')) {
+                putenv("LANG=$langCode");
+            }
+
+            if (defined('LC_MESSAGES')) {
+                setlocale(LC_MESSAGES, $langCode);
+            }
+
+            if (false === empty($langCode)) {
+                setlocale(LC_CTYPE, $langCode);
+            }
+        }
+
+        self::$_i18nData['domains'][$domain] = $localePath;
+        self::$_i18nData['language'] = $langCode;
+    }
+
+    /**
+     * Returns translation of a specific text, wrapper for translate().
+     *
+     * @param string $string
+     *         The string to translate
+     * @param string $domain [optional]
+     *         The domain to look up
+     * @return string
+     *         Returns the translation
+     */
+    public static function __($string, $domain = self::i18n_DEFAULT_DOMAIN) {
+        return self::translate($string, $domain);
+    }
+
+    /**
+     * Returns translation of a specific text
+     *
+     * @param string $string
+     *         The string to translate
+     * @param string $domain [optional]
+     *         The domain to look up
+     * @throws cException
+     *         if this is the backend mode and the $belang is not set
+     * @return string
+     *         Returns the translation
+     */
+    public static function translate($string, $domain = self::i18n_DEFAULT_DOMAIN) {
+        global $cfg, $belang, $contenido;
+
+        // Auto initialization
+        if (!self::$_i18nData['language']) {
+            if (!isset($belang)) {
+                if ($contenido) {
+                    throw new Exception('init $belang is not set');
+                }
+                // Needed - otherwise this won't work
+                $belang = false;
+            }
+
+            // CON-2165
+            // initialise localisation of plugins correctly in frontend
+            if ($domain === self::i18n_DEFAULT_DOMAIN) {
+                self::init($cfg['path']['contenido_locale'], $belang, $domain);
+            } else {
+                if (empty($belang)) {
+                    $oApiLang = new cApiLanguage(cRegistry::getLanguageId());
+                    $language = $oApiLang->getProperty('language', 'code');
+                    $country = $oApiLang->getProperty('country', 'code');
+
+                    $locale = $language . '_' . strtoupper($country);
+                    self::init($cfg['path']['contenido'] . $cfg['path']['plugins'] . $domain . '/locale/', $locale, $domain);
+                } else {
+                    self::init($cfg['path']['contenido'] . $cfg['path']['plugins'] . $domain . '/locale/', $belang, $domain);
+                }
+            }
+        }
+
+        // Is emulator to use?
+        if (!$cfg['native_i18n']) {
+            $ret = self::emulateGettext($string, $domain);
+            // hopefully a proper replacement for
+            // mb_convert_encoding($string, 'HTML-ENTITIES', 'utf-8');
+            // see http://stackoverflow.com/q/11974008
+            $ret = htmlspecialchars_decode(utf8_decode(conHtmlentities($ret, ENT_COMPAT, 'utf-8', false)));
+            return $ret;
+        }
+
+        // Try to use native gettext implementation
+        if (extension_loaded('gettext')) {
+            if (function_exists('dgettext')) {
+                if ($domain != self::i18n_DEFAULT_DOMAIN) {
+                    $translation = dgettext($domain, $string);
+                    return $translation;
+                } else {
+                    return gettext($string);
+                }
+            }
+        }
+
+        // Emulator as fallback
+        $ret = self::emulateGettext($string, $domain);
+        if (self::_isUtf8($ret)) {
+            $ret = utf8_decode($ret);
+        }
+        return $ret;
+    }
+
+    /**
+     * Returns the current language (if already defined)
+     *
+     * @return string|false
+     */
+    public static function getLanguage() {
+        return (self::$_i18nData['language']) ? self::$_i18nData['language'] : false;
+    }
+
+    /**
+     * Returns list of registered domains
+     *
+     * @return array
+     */
+    public static function getDomains() {
+        return self::$_i18nData['domains'];
+    }
+
+    /**
+     * Returns list of cached tranlation files
+     *
+     * @return array
+     */
+    public static function getFiles() {
+        return self::$_i18nData['files'];
+    }
+
+    /**
+     * Returns list of cached tranlations
+     *
+     * @return array
+     */
+    public static function getCache() {
+        return self::$_i18nData['cache'];
+    }
+
+    /**
+     * Resets cached translation data (language, domains, files, and cache)
+     */
+    public static function reset() {
+        self::$_i18nData['language'] = NULL;
+        self::$_i18nData['domains'] = array();
+        self::$_i18nData['files'] = array();
+        self::$_i18nData['cache'] = array();
+    }
+
+    /**
+     * Emulates GNU gettext
+     *
+     * @param string $string
+     *         The string to translate
+     * @param string $domain [optional]
+     *         The domain to look up
+     * @return string
+     *         Returns the translation
+     */
+    public static function emulateGettext($string, $domain = self::i18n_DEFAULT_DOMAIN) {
+        if ($string == '') {
+            return '';
+        }
+
+        if (!isset(self::$_i18nData['cache'][$domain])) {
+            self::$_i18nData['cache'][$domain] = array();
+        }
+        if (isset(self::$_i18nData['cache'][$domain][$string])) {
+            return self::$_i18nData['cache'][$domain][$string];
+        }
+
+        $translationFile = self::$_i18nData['domains'][$domain] . self::$_i18nData['language'] . '/LC_MESSAGES/' . $domain . '.po';
+        if (!cFileHandler::exists($translationFile)) {
+            return $string;
+        }
+
+        if (!isset(self::$_i18nData['files'][$domain])) {
+            self::$_i18nData['files'][$domain] = self::_loadTranslationFile($translationFile);
+        }
+
+        $stringStart = strpos(self::$_i18nData['files'][$domain], '"' . str_replace(array(
+            "\n",
+            "\r",
+            "\t"
+        ), array(
+            '\n',
+            '\r',
+            '\t'
+        ), $string) . '"');
+        if ($stringStart === false) {
+            return $string;
+        }
+
+        $matches = array();
+        $quotedString = preg_quote(str_replace(array(
+            "\n",
+            "\r",
+            "\t"
+        ), array(
+            '\n',
+            '\r',
+            '\t'
+        ), $string), '/');
+        $result = preg_match("/msgid.*\"(" . $quotedString . ")\"(?:\s*)?\nmsgstr(?:\s*)\"(.*)\"/", self::$_i18nData['files'][$domain], $matches);
+        // Old:
+        // preg_match("/msgid.*\"".preg_quote($string,"/")."\".*\nmsgstr(\s*)\"(.*)\"/",
+        // self::$_i18nData['files'][$domain], $matches);
+
+        if ($result && !empty($matches[2])) {
+            // Translation found, cache it
+            self::$_i18nData['cache'][$domain][$string] = stripslashes(str_replace(array(
+                '\n',
+                '\r',
+                '\t'
+            ), array(
+                "\n",
+                "\r",
+                "\t"
+            ), $matches[2]));
+        } else {
+            // Translation not found, cache original string
+            self::$_i18nData['cache'][$domain][$string] = $string;
+        }
+
+        return self::$_i18nData['cache'][$domain][$string];
+    }
+
+    /**
+     * Registers a new i18n domain.
+     *
+     * @param string $localePath
+     *         Path to the locales
+     * @param string $domain
+     *         Domain to bind to
+     */
+    public static function registerDomain($domain, $localePath) {
+        if (function_exists('bindtextdomain')) {
+            // Bind the domain 'contenido' to our locale path
+            bindtextdomain($domain, $localePath);
+        }
+        self::$_i18nData['domains'][$domain] = $localePath;
+    }
+
+    /**
+     * Loads gettext translation and file does some operations like stripping
+     * comments on the content.
+     *
+     * @param string $translationFile
+     * @return string
+     *         The preparend translation file content
+     */
+    protected static function _loadTranslationFile($translationFile) {
+        $content = cFileHandler::read($translationFile);
+
+        // Normalize eol chars
+        $content = str_replace("\n\r", "\n", $content);
+        $content = str_replace("\r\n", "\n", $content);
+
+        // Remove comment lines
+        $content = preg_replace('/^#.+\n/m', '', $content);
+
+        // Prepare for special po edit format
+        /*
+         * Something like: #, php-format msgid "" "Hello %s,\n" "\n" "you've got
+         * a new reminder for the client '%s' at\n" "%s:\n" "\n" "%s" msgstr ""
+         * "Hallo %s,\n" "\n" "du hast eine Wiedervorlage erhalten für den
+         * Mandanten '%s' at\n" "%s:\n" "\n" "%s" has to be converted to: msgid
+         * "Hello %s,\n\nyou've got a new reminder for the client '%s'
+         * at\n%s:\n\n%s" msgstr "Hallo %s,\n\ndu hast eine Wiedervorlage
+         * erhalten für den Mandanten '%s' at\n%s:\n\n%s"
+         */
+        // assemble broken long message lines (remove double quotes with a line
+        // break in between, e.g. "\n")
+        $content = preg_replace('/(""\\s+")/m', '"', $content);
+        // replace line breaks followed by a whitespace character against a line
+        // break
+        $content = preg_replace('/\\n"\\s+"/m', '\\n', $content);
+        // remove multiple line breaks
+        $content = preg_replace('/("\n+")/m', '', $content);
+        // remove the backslash from double quotes (\"foobar\" -> "foobar")
+        $content = preg_replace('/(\\\")/m', '"', $content);
+
+        return $content;
+    }
+    
+    private static function _isUtf8($input) {
+        $len = strlen($input);
+
+        for ($i = 0; $i < $len; $i++) {
+            $char = ord($input[$i]);
+            $n = 0;
+
+            if ($char < 0x80) {
+                // ASCII char
+                continue;
+            } else if (($char & 0xE0) === 0xC0 && $char > 0xC1) {
+                // 2 byte long char
+                $n = 1;
+            } else if (($char & 0xF0) === 0xE0) {
+                // 3 byte long char
+                $n = 2;
+            } else if (($char & 0xF8) === 0xF0 && $char < 0xF5) {
+                // 4 byte long char
+                $n = 3;
+            } else {
+                return false;
+            }
+
+            for ($j = 0; $j < $n; $j++) {
+                $i++;
+
+                if ($i == $len || (ord($input[$i]) & 0xC0) !== 0x80) {
+                    return false;
+                }
+            }
+        }
+        return true;
+    }
+}
\ No newline at end of file