A lightweight, browser-based port of the Leo Editor, the iconic outliner and scriptable literate programming environment.

👉 Try it now: https://boltex.github.io/leo-web/

Leo is a fundamentally different way to organize code, notes, and ideas. 📺 Watch the introduction

See Leo, the Literate Editor with Outline, at leo-editor.github.io/leo-editor or on github.

If you find it useful, please consider starring it on GitHub.

Leo-Web brings the core Leo experience to the browser.

• Work with Leo outlines without installing anything
• Script using JavaScript or TypeScript
• Access local files using the browser File System API

Leo-Web uses the browser's File System API. Due to browser security constraints, access is limited to a user-approved workspace directory.

For example:

• You can work inside project folders (e.g., C:/MyProject)
• You cannot access system-level directories or unrestricted root locations. Although access to subdirectories within user folders (e.g., Documents/MyProject) is permitted.

• No access to the original Leo's ~/.leo settings folder.
• No execution of OS shell commands
• No absolute file paths (relative paths only)
• Some keybindings are reserved by the browser (Ctrl+TAB, Ctrl+N and Ctrl+T)

• myLeoSettings.leo must be at the root of your chosen workspace
• UI settings are available via the log pane tab

If you would like to modify or build this project yourself, see CONTRIBUTING.md for how to get started.

For working with files directly inside online repositories, such as on GitHub and Azure-Repos, use the LeoJS VSCode extension within VSCode for the web. (It also can run in the desktop version of VSCode for unrestricted local file editing)

To work with the original Python implementation of Leo integrated into VSCode, use the LeoInteg VSCode extension.

Leo-Web is built on the ideas and work of the original Leo Editor authors:

leo-editor.github.io/leo-editor

Special thanks to Edward K. Ream and all contributors to Leo.

If you find this project useful, consider supporting or contributing:
boltex.github.io