Why would you want that though? Go Colemak[eD] and you won't look back. ^_^

See my sig topic for info!

Honestly, I do mean that. Hitting AltGr+J for đ and AltGr+P for ø etc is beyond confusing. Shai himself has admitted that the AltGr layers need more work to work well. That's what I've done.

Then, the answer is that PKL_eD is an AHK script with all that and more.

To make AltGr more accessible, consider the Wide ergo mod. It's enough for me at least. If you have a strange keyboard – especially some older boards! – it may be worse.

For scientific writing, did you see the Colemak[eD] dead key mappings? They're really extensive and I consider them very useful. With PKL_eD you even get on-screen help images in case you, like me, keep forgetting how to type, e.g., ∈ or ∇.

I have Colemak[eD] for PortableKeyboardLayout[eD] and for XKB, so yes – it covers those two. And you get the marvelous Extend for free.

For Linux, not all the dead key mappings are there. You'll have to Compose them the traditional Linux way. No biggie though. And no help images, obviously.