Proton

While initially it was designed as a simpler alternative to HTML, Markdown is also an excellent solution for organizing notes, to-do lists and edit text documents effortlessly.

Proton is a lightweight piece of software that enables you to take notes, write down your thoughts or create codes that you export to HTML without worrying too much about formatting.

It is necessary to mention that you can convert the markdown code to HTML and hence, use the new file to fill in the code for your website. Alternatively, you can convert it to PDF or save it as a plain text that you can use later on for other projects.

It would be nice if the application enabled you to copy the code to clipboard or export it to CSS or other formats as well. It would be useful if the program had a search function, a feature that would be especially useful when you are working with large documents or codes. Then again, the app does includes syntax highlight which can be helpful when writing or editing scripts.

In spite of its stylish 2-panel view interface, the program does not include as many editing features as you would need to create or modify markdown files. In fact, the text editing that you can perform via the application can be summarized to cut, copy, paste as well as undo and redo.

Formatting-wise, the program does not allow you to carry out basic corrections, such as bold, underline or using italic to highlight words or sentences. Moreover, you cannot alter the style of the text, a feature that could be handy in a variety of situations.

As a side note, at times you may notice that the content of the two panels overlaps. Resizing the window is the simplest method to address this nuisance.

Considering that the program does not include too many options that would enable you to accurately write a code, Proton might be a good choice if you need an application that allows you to view markdown files.