Now you can customize and control permalinks structure and .htaccess file direct from your WordPress admin areadashboard. WP htaccess Control should really be called as htacess and Rewrite Control plugin. The plugin provides you an easy interface for customizing htaccess file generated by WordPress and also its permalinks structure of author, category, archives, pagination and custom taxonomies.
Monkeyman Rewrite Analyzer understand your rewrite rules (“Permalinks”). It is indispensable if you are adding or modifying rules and want to understand how they work (or why they don’t work).