-
keymap-drawer
Visualize keymaps that use advanced features like hold-taps and combos, with automatic parsing
-
SurveyJS
Open-Source JSON Form Builder to Create Dynamic Forms Right in Your App. With SurveyJS form UI libraries, you can build and style forms in a fully-integrated drag & drop form builder, render them in your JS app, and store form submission data in any backend, inc. PHP, ASP.NET Core, and Node.js.
I use http://www.keyboard-layout-editor.com/ to create an image and use AutoHotkey to pop it up when I need it using hotkey(s), it also has help for the hotkeys for Windows, my AutoHotkey script and piles of applications so I can quickly reference app hotkeys when I'm memorizing them or for the less common ones I can't remember.
I maintain an SVG file of my keymap and have a macro to type the URL to that file on GitHub for quick access: https://github.com/dlford/qmk_firmware/blob/dlford/users/dlford/keymap_3x5_3.svg