MODX Revolution Plugin that saves all your Chunks and Snippets to the external files (in category folders) right in the Root directory. Save the plugin, go to "System Events", check "On Manager Cache Update", Refresh cache from Dashboard, Disable Plugin.

MODX plugn. Save Chunks and Snippets to the external files

<?php

$chunks = $modx->getCollection('modChunk');
$snippets = $modx->getCollection('modSnippet');

foreach ($chunks as $chunk) {	

	$content = $chunk->getContent();

	$category = "SELECT category FROM `modx_categories` WHERE id = " . $chunk->get('category') . "";

	$query = $modx->query($category);

	$aCategory = $query->fetch(PDO::FETCH_ASSOC);

	mkdir('../chunks/'.$aCategory['category'], 0755, true);

	$file = '../chunks/'.$aCategory['category'].'/'.$chunk->get('name').'.tpl';

	$handle = fopen($file, 'w') or die('Cannot open file:  '.$file);

	fwrite($handle, $content);

}

foreach ($snippets as $snippet) {	

	$content = $snippet->getContent();

	$category = "SELECT category FROM `modx_categories` WHERE id = " . $snippet->get('category') . "";

	$query = $modx->query($category);

	$aCategory = $query->fetch(PDO::FETCH_ASSOC);

	mkdir('../snippets/'.$aCategory['category'], 0755, true);

	$file = '../snippets/'.$aCategory['category'].'/'.$snippet->get('name').'.php';

	$handle = fopen($file, 'w') or die ('Cannot open file:  '.$file);
	
	fwrite($handle, $content);

}
?>