1) Add your own delimiter (comma and other) and display Categories (including child categories)
2) Allows you to list categories with/without Hyper Link
4) This is an extension of wordpress_list_categories() so all the parameters, you use in that function, will work here also.
3) Works well in 2.3 or later

Usages:

webwalas_list_categories(’depth=1&show_count=0&title_li=&orderby=ID&show_link=yes&style=webwalas&deli=, &exclude=257′);

if show_link=yes (hyperlink will be added)
if style=webwalas (default comma will be added)

Let me know if any further help is required.

Comma Delimited Categories Lists in WordPress (12)