diff --git a/com_oauthserver/administrator/src/Helper/CasesHelper.php b/com_oauthserver/administrator/src/Helper/CasesHelper.php
new file mode 100644
index 0000000..72244a5
--- /dev/null
+++ b/com_oauthserver/administrator/src/Helper/CasesHelper.php
@@ -0,0 +1,138 @@
+<?php
+
+namespace Webmasterskaya\Component\OauthServer\Administrator\Helper;
+
+/**
+ * Class for convert string to different cases styles
+ * such as camelCase, kebab-case etc.
+ *
+ * @since       version
+ */
+class CasesHelper
+{
+    /**
+     * Convert string to snake_case_style
+     *
+     * @param string $string input string
+     *
+     * @return string
+     *
+     * @since version
+     */
+    public static function snakeize(string $string): string
+    {
+        $string = static::clean($string, '_');
+
+        return strtolower($string);
+    }
+
+    /**
+     * Convert string to kebab-case-style
+     *
+     * @param string $string input string
+     *
+     * @return string
+     *
+     * @since version
+     */
+    public static function kebabize(string $string): string
+    {
+        $string = static::clean($string, '-');
+
+        return strtolower($string);
+    }
+
+    /**
+     * Convert string to dotted.case.style
+     *
+     * @param string $string input string
+     *
+     * @return string
+     *
+     * @since version
+     */
+    public static function dottedize(string $string)
+    {
+        $string = static::clean($string, '.');
+
+        return strtolower($string);
+    }
+
+    /**
+     * Convert string to lowerCameCase, UpperCamelCase, PascalCase styles
+     *
+     * @param string $string input string
+     * @param bool $uc_first true - to UpperCamelCase, false - to lowerCamelCase
+     *
+     * @return string
+     *
+     * @since version
+     */
+    public static function camelize(string $string, bool $uc_first = false): string
+    {
+        $string = self::snakeize($string);
+        $string = ucwords($string, '_');
+        $string = str_replace('_', '', $string);
+
+        return $uc_first ? ucfirst($string) : lcfirst($string);
+    }
+
+    /**
+     * Convert string to PascalCase (without starting digits)
+     *
+     * @param string $string input string
+     *
+     * @return string
+     *
+     * @since version
+     */
+    public static function classify(string $string): string
+    {
+        $string = self::camelize($string, true);
+        $string = preg_replace('/^\d+/', '', $string);
+
+        return ucfirst($string);
+    }
+
+    /**
+     * @param string $string
+     * @param string $replacement
+     *
+     * @return string
+     *
+     * @since version
+     */
+    private static function clean(string $string, string $replacement): string
+    {
+        if (empty($replacement)) {
+            throw new \RuntimeException('The replacement cannot be empty');
+        }
+
+        // Prepare $replacement to use in regular expression
+        $preg = preg_quote($replacement, '/');
+
+        // Replace multiple spaces between characters
+        $string = (string)preg_replace('/[\s.]+/', $replacement, $string);
+
+        $legal_cars = str_replace($replacement, '', '_-.');
+        $legal_cars = preg_quote($legal_cars);
+
+        // Remove all illegal characters
+        $string = (string)preg_replace('/[^0-9a-zA-Z' . $legal_cars . $preg . ']/', '', $string);
+
+        // Replace all non-alphabetic characters with replacement
+        $string = (string)preg_replace('/[' . $legal_cars . ']/', $replacement, $string);
+
+        // Inserts a replacement before all words starting with uppercase characters
+        $string = (string)preg_replace('/(.)([A-Z][a-z]+)/', '$1' . $replacement . '$2', $string);
+
+        // Insert a replacement between digit and uppercase characters
+        $string = (string)preg_replace('/([a-z\d])([A-Z])/', '$1' . $replacement . '$2', $string);
+
+        // Replace multiple replacement
+        $string = (string)preg_replace('/[' . $preg . ']+([A-Z0-9])/', $replacement . '$1', $string);
+
+        // Return without replacement at the beginning and end of the line
+        return trim($string, $replacement);
+    }
+}
\ No newline at end of file