Longer Permalinks

Set Custom Permalink Editor on a per-post, per-tag per-page, and per-category basis.

Convert Greek characters to Latin on all your site's permalinks instantly.

Remove Category URL strips the /category/ base from your category URLs, turning something like /category/my-category/ into simply /my-category/.

Transforms Simplified or Traditional Chinese character titles into Pinyin to create a permalink friendly slug.

Translitaration of greek characters to latin for post permalinks with some extra options. (greeklish)

Permalink Manager enhances WordPress’s built-in URL system, allowing you to change the URLs of native and custom post types and taxonomies.