cl-slug
cl-slug is a small library to make slugs, mainly for URIs, from english and beyond.

Example:

(slugify "My new cool article, for the blog (V. 2).") ; => "my-new-cool-article-for-the-blog-v-2"

We can also put another symbol than a dash as delimiter or use CamelCase.

cl-slug is in Quicklisp.