mwcls is a set of document classes for LaTeX designed with Polish typographical tradition in mind. The classes include: mwart (which is a replacement for article), mwrep (replacing report), and mwbk (replacing book).

Most features present in standard classes work with mwcls classes. Some extensions/exceptions include: sectioning commands allow for second optional argument (it is possible to state different texts for running head and for TOC), new environments itemize* and enumerate* for lists with long items, page styles have variants for normal, opening, closing, and blank pages.