Mou has word auto-completion (accessed via 'esc') for English words, text transformation such as conversions to uppercase, blockquote or an h1 heading, HTML entities (such as <’s, &’s and spaces) that can be added anywhere in the text and customizable keyboard shortcuts for everything allowing for efficient use of the software's capabilities.

Mou provides full syntax highlighting for Markdown. The highlighting can be customized manually or by applying a predefined theme.

Mou is split into two columns. It displays raw Markdown on the left and formatted text on the right. Text on the right will update in near real-time as raw Markdown is written.

Mou can do incremental ("find as you type") pattern matching search. For example, it can find all words that have x as the third letter followed by at least 4 more letters and a line break.

Mou is available as a free download up until the release of 1.0.

The whole editor can be customized using different color schemes and users can create own variations by editing CSS.

Mou supports CJK characters for writing Markdown in Chinese, Japanese or Korean.

Markdown can be exported as an HTML or a PDF file. Each export can also be styled by a custom CSS.

Mou has keyboard shortcuts for all text manipulation actions allowing for highly efficient use of the software. These shortcuts can also be manually edited to better fit each individual workflow.

The app includes optional atmospheric typewriter sounds that are triggered with each keypress. These can be enabled in the settings.

Mou allows writing and publishing to blogs from within the editor.