diff --git a/Classes/Frontend/DataProcessing/CategoriesCounts.php b/Classes/Frontend/DataProcessing/CategoriesCounts.php
new file mode 100644
index 0000000..d4ec288
--- /dev/null
+++ b/Classes/Frontend/DataProcessing/CategoriesCounts.php
@@ -0,0 +1,110 @@
+<?php
+
+namespace DanielSiepmann\DsSite\Frontend\DataProcessing;
+
+/*
+ * Copyright (C) 2020 Daniel Siepmann <coding@daniel-siepmann.de>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ */
+
+use TYPO3\CMS\Core\Database\Query\QueryBuilder;
+use TYPO3\CMS\Core\Database\Query\QueryHelper;
+use TYPO3\CMS\Frontend\ContentObject\ContentObjectRenderer;
+use TYPO3\CMS\Frontend\ContentObject\DataProcessorInterface;
+
+class CategoriesCounts implements DataProcessorInterface
+{
+    /**
+     * @var QueryBuilder
+     */
+    private $queryBuilder;
+
+    public function __construct(QueryBuilder $queryBuilder)
+    {
+        $this->queryBuilder = $queryBuilder;
+    }
+
+    public function process(
+        ContentObjectRenderer $cObj,
+        array $contentObjectConfiguration,
+        array $processorConfiguration,
+        array $processedData
+    ) {
+        $as = $cObj->stdWrapValue('as', $processorConfiguration, 'categories');
+        $parent = $cObj->stdWrapValue('parent', $processorConfiguration, '');
+        $orderBy = $cObj->stdWrapValue('orderBy', $processorConfiguration, 'count desc');
+        [$orderByField, $orderByDirection] = QueryHelper::parseOrderBy($orderBy)[0];
+
+        if ($parent === '') {
+            throw new \InvalidArgumentException('No "parent" given.', 1600988668);
+        }
+        if ($orderByField === null || $orderByDirection === null) {
+            throw new \Exception('Non correct "orderBy" given. Needs field and "asc" or "desc".', 1600988713);
+        }
+
+        $processedData[$as] = $this->getCategoriesCount(
+            $parent,
+            $orderByField,
+            $orderByDirection
+        );
+
+        return $processedData;
+    }
+
+    private function getCategoriesCount(
+        int $parentId,
+        string $orderByField,
+        string $orderByDirection
+    ): array {
+        $queryBuilder = clone $this->queryBuilder;
+
+        $queryBuilder->select('category.*');
+        $queryBuilder->addSelectLiteral('count(mm.uid_foreign) as count');
+        $queryBuilder->from('pages');
+        $queryBuilder->leftJoin(
+            'pages',
+            'sys_category_record_mm',
+            'mm',
+            'pages.uid = mm.uid_foreign',
+        );
+        $queryBuilder->leftJoin(
+            'mm',
+            'sys_category',
+            'category',
+            'mm.uid_local = category.uid',
+        );
+        $queryBuilder->where(
+            $queryBuilder->expr()->eq(
+                'category.parent',
+                $queryBuilder->createNamedParameter($parentId)
+            )
+        );
+        $queryBuilder->groupBy('category.uid');
+        $queryBuilder->orderBy($orderByField, $orderByDirection);
+
+        $statement = $queryBuilder->execute();
+
+        $categories = [];
+        while ($category = $statement->fetch()) {
+            $categories[] = [
+                'data' => $category,
+            ];
+        }
+
+        return $categories;
+    }
+}
diff --git a/Configuration/Services.yaml b/Configuration/Services.yaml
index 1a056a3..64457bb 100644
--- a/Configuration/Services.yaml
+++ b/Configuration/Services.yaml
@@ -10,6 +10,19 @@ services:
   DanielSiepmann\DsSite\:
     resource: '../Classes/*'
 
+  querybuilder.pages:
+    class: 'TYPO3\CMS\Core\Database\Query\QueryBuilder'
+    factory:
+      - '@TYPO3\CMS\Core\Database\ConnectionPool'
+      - 'getQueryBuilderForTable'
+    arguments:
+      - 'pages'
+
+  DanielSiepmann\DsSite\Frontend\DataProcessing\CategoriesCounts:
+    public: true
+    arguments:
+      $queryBuilder: '@querybuilder.pages'
+
   # Widgets
   dashboard.widget.site_ownrss:
     class: 'TYPO3\CMS\Dashboard\Widgets\RssWidget'
diff --git a/Configuration/TypoScript/Setup/Page.typoscript b/Configuration/TypoScript/Setup/Page.typoscript
index b3a1c96..cabaf01 100644
--- a/Configuration/TypoScript/Setup/Page.typoscript
+++ b/Configuration/TypoScript/Setup/Page.typoscript
@@ -81,18 +81,17 @@ page {
                 orderBy = colPos, sorting
             }
 
-            100 < .10
+            100 = DanielSiepmann\DsSite\Frontend\DataProcessing\CategoriesCounts
             100 {
                 as = allTopics
-                selectFields = sys_category.*, count(sys_category_record_mm.uid_foreign) as count
-                where = sys_category.parent = 1 AND sys_category_record_mm.uid_foreign IS NOT NULL
-                groupBy = sys_category.uid
+                orderBy = count desc
+                parent = 1
             }
             101 < .100
             101 {
                 as = allTypo3Compatible
-                where = sys_category.parent = 2 AND sys_category_record_mm.uid_foreign IS NOT NULL
-                orderBy = sorting
+                orderBy = title asc
+                parent = 2
             }
 
             500 = TYPO3\CMS\Frontend\DataProcessing\FilesProcessor