[ddevault]

Vi isn't Vim-like. Vim is Vi-like.

[a3n]

All of the listed apps have a subset of vim's functions. So does vi.

You use the listed apps because you wish you were in vim, sort of.

When you log in to a strange or bare system and need to edit, you wish you had vim. But at least you'll have vi, almost as good.

[iLemming]

Exactly. Vim stands for "Vi, Improved".