What are some alternatives?
When comparing Classeur and Dillinger, you can also consider the following products
ghostwriter - A distraction-free Markdown editor for the desktop
Typora - A minimal Markdown reading & writing app.
Boostnote - Boostnote is an open-source note-taking app.
Caret - Better Markdown Editor for Mac / Windows / Linux
Scrapbox - A new style of note-taking that lets you create, discuss, and learn together in one self-organizing space.
MacDown - MacDown is an open source Markdown editor for OS X, released under the MIT License.