The one to look out for is certainly Yahoo. This week they released there UI library into the public domain under a BSD licence and then showed off there design patterns which I sent around to our designers for consideration. I also got the chance to read through Tom Coates fantastic presentation at the Carson workshops future of web apps summit and to top everything off. Yahoo is now hiring semantic web developers? Yahoo is once again on a roll. No wonder why Tom Coates moved. Oh by the way, don't forget to check out Simons notes which are great when flicking through the pdf presentation offline.
Jeremy Zawodny has taken the main points and broke it down into something which can be translated for product managers. Yahoo are certainly on a run!