This is the demo (posted by William Stein) from the Paper Man but as a Sage worksheet in SageMathCloud. Paper Man was featured on Hacker News.
It's a latex editor with a markdown feel.
You can write latex You can have bold italic and italic bold font.
You can create lists
Notice the Download PDF button in the top center.
Let me know what you think, my email is [email protected]
Enjoy Paper Man, Patrick Lorio.
Somebody asked about (sorry not numbered by default...)
This works here, since we use MathJax: