Today I found out about the Vim Awesome site:
Vim Awesome is a directory of Vim plugins sourced from GitHub, Vim.org, and user submissions. Plugin usage data is extracted from dotfiles repos on GitHub.
My experiment with emacs wrapped up last month (a topic for another post), and this gets the closest to giving me a similar experience to the MELPA web interface for Vim. I love the breakdown of plugin types, and the ability to search and sort results.