diff --git a/flextype/Fieldsets.php b/flextype/Fieldsets.php
new file mode 100644
index 00000000..81d15d8a
--- /dev/null
+++ b/flextype/Fieldsets.php
@@ -0,0 +1,121 @@
+<?php
+
+/**
+ * @package Flextype
+ *
+ * @author Sergey Romanenko <hello@romanenko.digital>
+ * @link http://romanenko.digital
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Flextype;
+
+use Flextype\Component\Filesystem\Filesystem;
+use Flextype\Component\Registry\Registry;
+
+class Fieldsets
+{
+
+    /**
+     * Rename fieldset
+     *
+     * @access public
+     * @param string $fieldset     Fieldset
+     * @param string $new_fieldset New fieldset
+     * @return bool True on success, false on failure.
+     */
+    public static function rename(string $fieldset, string $new_fieldset) : bool
+    {
+        return rename(Fieldsets::_file_location($fieldset), Fieldsets::_file_location($new_fieldset));
+    }
+
+    /**
+     * Update fieldset
+     *
+     * @access public
+     * @param string $fieldset Fieldset
+     * @param string $data     Data
+     * @return bool True on success, false on failure.
+     */
+    public static function update(string $fieldset, string $data) : bool
+    {
+        $fieldset_file = Fieldsets::_file_location($fieldset);
+
+        if (Filesystem::has($fieldset_file)) {
+            return Filesystem::write($fieldset_file, $data);
+        } else {
+            return false;
+        }
+    }
+
+    /**
+     * Create fieldset
+     *
+     * @access public
+     * @param string $fieldset Fieldset
+     * @param string $data     Data
+     * @return bool True on success, false on failure.
+     */
+    public static function create(string $fieldset, string $data = '') : bool
+    {
+        $fieldset_file = Fieldsets::_file_location($fieldset);
+
+        // Check if new entry file exists
+        if (!Filesystem::has($fieldset_file)) {
+            return Filesystem::write($fieldset_file, $data);
+        } else {
+            return false;
+        }
+    }
+
+    /**
+     * Delete fieldset.
+     *
+     * @access public
+     * @param string $fieldset Fieldset
+     * @return bool True on success, false on failure.
+     */
+    public static function delete(string $fieldset) : bool
+    {
+        return Filesystem::delete(Fieldsets::_file_location($fieldset));
+    }
+
+    /**
+     * Copy fieldset
+     *
+     * @access public
+     * @param string $fieldset      Fieldset
+     * @param string $new_fieldset  New fieldset
+     * @return bool True on success, false on failure.
+     */
+    public static function copy(string $fieldset, string $new_fieldset) : bool
+    {
+        return Filesystem::copy(Fieldsets::_file_location($fieldset), Fieldsets::_file_location($new_fieldset), false);
+    }
+
+    /**
+     * Check whether fieldset exists.
+     *
+     * @access public
+     * @param string $fieldset Fieldset
+     * @return bool True on success, false on failure.
+     */
+    public static function has(string $fieldset) : bool
+    {
+        return Filesystem::has(Fieldsets::_file_location($fieldset));
+    }
+
+    /**
+     * Helper method _file_location
+     *
+     * @access private
+     * @param string $name Name
+     * @return string
+     */
+    private static function _file_location($name)
+    {
+        return PATH['themes'] . '/' . Registry::get('settings.theme') . '/fieldsets/' . $name . '.yaml';
+    }
+}