API is first-class. It can be discovered, versioned, and documented. MessagePack structured communication allows extensions in any language. Remote plugins can be run as co-processes safely and asynchronously. GUIs, IDEs and web browsers can embed Neovim as an editor/script host. It works everywhere with one build-type and one command. Modern terminal features include cursor styling, focus events and bracketed paste. Strong defaults and a built-in terminal emulator. Compatible with Vim's editing mode and Vimscript version 1. If you are already using Vim, start with :help vim-from-vim. The current stable version is 0.5 (RSS). The roadmap contains information about the current state of affairs and future plans. Neovim has 30% less source code than Vim. This allows for new applications to be developed without compromising Vim’s traditional roles. Lua is already included, but Vimscript has the most advanced Vimscript engine (which includes an AST-producing Parser).