My favorite editor is vim, but it has downsides as well. Vim doesn’t have a the GUI needed to extend it to preview things like Markdown properly. Yeah, sure vim can highlight Markdown syntax, but that is not a replacement for real previewing. With that itch in mind, I searched for a solution but found none that satisfied me. For reStructuredText I’ve found a solution that worked well. It worded by starting a local web-server and does the previewing in the browser. Inspired by it, I started writing
mdview allows you to instantly preview in your favorite browser any Markdown file you’re editing. It will automatically refresh when the file is changed, hence it great for working with the editor and browser side-by-side for live preview.