codi.vim
The interactive scratchpad for hackers
...It creates a live buffer where inputs on one side produce continuously updated outputs on the other, helping you prototype snippets and explore APIs quickly. The plugin supports multiple languages by leveraging system interpreters or backends and displays results inline without switching context. It focuses on minimal setup so you can open a buffer, set a filetype, and start experimenting immediately. Because results update incrementally, it is useful for learning, debugging, or documenting small examples. It turns Vim into a lightweight computational notebook while keeping the modal editing experience intact.