Open-Source Notion UI, Lotion
My friend and I love the Notion UI, so we open-source a version we have been building. - Block-based editor - Drag to reorder blocks - Basic Markdown-parsing including bold, italic, headings and divider - Type '/' for command menu and shortcuts Tiny fun detail: When you move between blocks with your arrow keys, your cursor will remain at roughly the same horizontal position (vs jumping to the start or end of a block). Lotion is quite limited for now, and we would love any contributions (e.g. image blocks, video blocks, code blocks, etc.)
In plain words
Lotion is an open-source block-based editor inspired by Notion's interface. It features drag-to-reorder blocks, basic markdown parsing for formatting, and a command menu accessible by typing '/'. The editor maintains cursor position when navigating between blocks with arrow keys. Currently in early stages, it supports text formatting and basic structures, with developers actively seeking contributions for additional features like image, video, and code blocks.
written from the facts on this page · September 2026
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