Here is Leo's main window rendered with the Qt gui. Top-left: the outline pane. Top-right: the log pane. Bottom: the body pane. Below the body pane is the minibuffer.
Here is Leo's main window rendered with the Tk gui. Just as with the Qt gui, you may adjust font sizes, colors, et.

Here is Leo's find tab, rendered with the Tk gui. All parts of the find tab can be controlled from the keyboard.
Here is Leo's main window as it appears on Linux:
