document updated 10 years ago, on Nov 14, 2013
Vim's new features allow some tricks with the display that sometimes allow more full-fledged editors to be implemented inside Vim itself.
markdown editor
Vim's new conceal feature allows the markup text to be hidden, and to show the rendered text instead.
[1]
Vim as a spreadsheet
vim-table-mode
Others:
[1]
[2]
[3]
display popup text, like Excel's "display comment"
These scripts are likely based on Vim's ballooneval feature, though that only works in GUIs. Alternative methods include amenu, and the completion feature.
[1]
slides
vimdeck