So, it seems the movie was sponsored by Apple... :cool
Kate's machine is a Mac PowerBook Duo 270c, as seen here:
http://www.flickr.com/photos/kenleewrites/3277732933/
But apparently painted a glossy dark gray/black color (and detailed). Turns out the clear laptop is the same model.
Dade uses a different model PowerBook in the final scene of attacking the Gibson, looks like a PowerBook 540c.
The machine that gets painted is Dade's original machine discussed above (the big, ugly one). He uses this until he gets the clear laptop. The screen shots show it running an Apple OS (when you can tell the OS, that is), but I can't find pictures of this thing online. It's either hacked together as a prop, or just some other 'luggable' that I couldn't find, might even be a PC machine. The weird (hopefully unique) feature is the apparent track ball and buttons next to the screen...
Here's some key pics: (RAR file of everything at the bottom...)
Dade's machine:
Kate's machine, along with an external floppy drive, Apple Newton, and two 2600 Magazines (never noticed those before... probably looking too closely at something else in that shot... :cool )
And the clear laptop:
And here's everything I captured (about 46 images of all the laptops, and a few bits of random hardware...)
This also includes the other hackers' machines during the final Gibson battle. I haven't identified those yet....
http://props.handheldmuseum.com/Z_Img/ForumImgs/TheRPFCom/HackersComputers.rar