Vim style Omnicomplete for emacs?

Question

I've found several code completion elisp packages for emacs that do code completion, but most bind to a key such as M-/ to toggle completion. Is there something similar to Vim's omnicomplete where you can set it to automatically pop up a list of autocompletion options where you can either navigate through them, or just keep typing.

See screenshot for example:

Answer 1

I think company mode would best fit your description. Have a look at it.