lightline.vim

Lightline.vim is a lightweight and highly configurable statusline (and tabline) plugin for Vim. While Vim ships with a built-in statusline that gives basic info (filename, cursor position, etc), Lightline dramatically upgrades the look and feel and the customisability of that bar at the bottom of your editor. It supports color themes that reflect Vim’s current mode (normal, insert, visual, etc), and allows you to define arbitrary “components” (such as custom plugin statuses, file-encoding, branch name, cursor column, etc). Importantly, the plugin is designed to be minimal and orthogonal—i.e., it doesn’t impose or depend on other plugins, but offers a clean API so you can integrate other tools. Many users adopt Lightline for both aesthetic and functional improvements (e.g., cleaner statusline, better separation of mode/filename/flags, consistent look across color schemes). Because it's lightweight, it typically has minimal performance impact.