When comparing Mou vs Ulysses III, the Slant community recommends Ulysses III for most people. In the question“What are the best Markdown editors for OS X?” Ulysses III is ranked 3rd while Mou is ranked 6th. The most important reason people chose Ulysses III is:
A few themes are baked in and a big selection of [user-contributed styles](http://styles.ulyssesapp.com/) to choose from are available on the Ulysses Style Exchange.
Ranked in these QuestionsQuestion Ranking
Pro Advanced text editing
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.
Pro Full syntax highlighting
Mou provides full syntax highlighting for Markdown. The highlighting can be customized manually or by applying a predefined theme.
Pro Has real-time split-screen preview
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.
Pro Powerful search
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.
Pro Free beta versions
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.
Pro Support for CJK characters
Mou supports CJK characters for writing Markdown in Chinese, Japanese or Korean.
Pro Export as HTML or PDF
Markdown can be exported as an HTML or a PDF file. Each export can also be styled by a custom CSS.
Pro Customizable keyboard shortcuts
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.
Pro Includes optional typewriter keypress sounds
The app includes optional atmospheric typewriter sounds that are triggered with each keypress. These can be enabled in the settings.
Pro Scriptogr.am & Tumblr integration via Dropbox
Mou allows writing and publishing to blogs from within the editor.
Pro Highly customizable
A few themes are baked in and a big selection of user-contributed styles to choose from are available on the Ulysses Style Exchange.
Pro Does not distract the user
Ulysses has a clean, unobtrusive, easy to overview interface that allows focusing on writing. By default it's split up in 3 panes with sidebar, sheet pane and content pane from left to right. Unnecessary panes can be hidden.
Pro No Markdown syntax knowledge required
Markdown formatting can be applied from the right-click menu, with keyboard shortcuts or from an optional markup bar. Necessary elemants to links, images, and footnotes are added by filling in a popover.
Pro Can paste rich text and import from Word
Pasted rich text and imported Word documents keep their formatting when converted to Markdown.
Pro Attachments can be added
Attachments such as images, text notes, keywords and writing goals can be added to content. And to organize them keywords can be added.
Pro Great tools for organizing and finding files
Ulysses saves everything in the app so there's no file management outside of the editor involved. It organizes content in groups (folders) and sheets (files), has a powerful, easy to use search and allows adding keywords to attachments to help them be organized and found quickly.
Groups can have an unlimited amount of subgroups and the title of subgroup shows up in the pane view. Sheets can be split up, merged, glued together and easily moved around in the sheet pane by dragging and dropping. Great for splitting up larger documents into manageable chunks while still keeping an overview of the whole project and having the ability to move sections around quickly.
Contents of a group can be filtered by text, keywords or change date within headings, code blocks, images or any other marked up text. Filters can contain a combination of conditions and be saved to make a new group. Saved filters can be moved around to different groups and will return filtered results for that group. Selecting multiple groups will show the combined sheets of those groups.
Pro Keyboard navigation
You can operate Ulysses via keyboard only. No need for mouse.
Pro Multiple preview and export options
The editor can export to Plain Text, RTF, Word, HTML, ePub and PDF with customizable styles for each option. It can also preview HTML directly in the browser.
Pro Inline formatting
There's no live-preview pane or an external previewer necessary. Ulysses displays styling inline.
Pro Includes features for not losing place
Ulysses has options for highlighting current line, showing line numbers and enabling typewriter mode. Typewriter mode defines a place on the screen where the cursor should be so eyes are kept focusing in one place on the screen.
Pro Syncs via iCloud
Content can be synchronised across devices via Apple's iCloud.
Pro Comprehensive documentation
Ulysses comes with an excellently written documentation that covers everything there is to know about the software, including an extensive list of keyboard shortcuts as well as short and sweet introduction to Markdown and its benefits.
Pro Allows the user to work anywhere and on any Apple device of their choice
Ulysses is available for both macOS and iOS. This, combined with the cloud syncing allows users to work on their projects using any Apple device they have at the time.
Pro Displays statistics including how long it takes to read the document
The editor tracks statistics that shows how many characters, words, sentences, paragraphs, and pages a document contains and estimated reading time for slow, average, and fast readers. The statistics display in a popover that can be torn-off so it's constantly visible.
Pro Helps get stuff done
Goals such as how many characters, words, sentences, paragraphs, lines or pages should be written can be set to help get motivated.
Pro Powerful organization features
Groups, tagging, and notes for each document.
Pro Helpful support
Staff is helpful in answering questions on how to use the app.
Pro A demo version is available
A time (10hrs) and usage limited demo for Ulysses III is available.
Con No longer maintained
The latest version was released in 2014, version 1.0 was announced for 2015 but was never released. The app is not compatible with macOS Sierra.
Con Only free until 1.0 release
Once 1.0 is released (still unreleased as of May 2017, release was planned for August 2015), Mou will cost $30. It can currently be pre-ordered for half the price.
Con Text is hard to read on a big screen in full-screen mode
On big screens legibility is pretty bad when entering full-screen mode because the text is not columned nor centered. On smaller screens though, legibility is quite good even on full-screen.
Con Doesn't work as well with non-monospaced fonts
When using a non-monospaced font, the text jiggles around. It can be very annoying since users may not always want to write with a monospaced font.
Con Switching live preview on/off changes the width of text area
Con v1.0 was promised to Indiegogo founders more than a year ago
Safe to say this is dead software at this point.
Ulysses now operates on a subscription-based model. $4.99/month or $39.99/year. It is not currently possible to pay once and keep it.
Con Overwrites imported markdown files
When previously written markdown files are imported, they're converted to Ulysses' version of Markdown and original files are overwritten.
Con Cannot render code blocks
You can go around this limitation, but it is complex and not so pretty looking as it is in other Markdown Editors.
Con Proprietary file format
Text is saved in a database in proprietary format. Meaning, your notes can't be accessed other than through the app, and cannot be moved other than by exporting them.
Con Automatic switching of sheets can be confusing
Scrolling down when at the bottom of a sheet will switch to next sheet. When unexpected, this behavior can be confusing to some.
Con iOS and Mac versions have to be bought separately
The iOS version costs $24.99 and the macOS version costs $44.99. They have to be bought separately in order to be used on those devices.
Con No proper right-to-left support in PDF
Ulysses lacks right-to-left support that was available in the previous incarnation of this software.