The KOMA-Script bundle provides drop-in replacements for the article/report/book classes with emphasis on typography and versatility. There is also a letter class, different from all other letter classes. It also offers e.g. a package for calculated type areas in the way laid down by the typographer Jan Tschichold, a package for easily changing and defining of page styles, a package for getting not only the current date but also the name of day and a package for getting current time. All these packages may be used not only with KOMA-Script classes but also with standard classes.

Since every package has its own version number, the number below is only the version of scrbook, scrreprt, scrartcl, scrlttr2 and typearea. These are the main parts of the bundle.
The author is Markus Kohm.