at least they have stuff like modular test chambers, antigravity platforms, fully function artificial intelligences, tractor beams, vaporization fields, and portal technology that doesn't cause an apocalypse when used. And they had the portals for 50 years.
It actually is pretty crazy how much useful and innovative stuff Aperture made, I suspect that it's because they're really bad at marketing the stuff that did them in
Edited:
In Portal 2 canon. Portal 2 retcons a shitload from Half-Life / Portal 1. Hell, practically the entire story is a retcon of everything that was known before.
Whether or not they still have all that stuff in Half-Life's canon, I'm not sure.
You can't have them take place in the same universe and then have them not. Once it's done, it's done unless they bring out some plot magic like Aperture being sent to another dimension because portals screwing up or something