OllyDbg is my favorite assembly editing environment for reverse engineering applications in Windows. I used it for all of my Ragnarok Online projects in 2002, and you can find a tutorial that uses it here (sorry, the writing in it is horrible x.x; ).
Ever since I started using it back then, the author was talking about his complete rewrite of the program, dubbed version 2.0, that was supposedly going to be much, much better. I have been patiently waiting for it ever since :-).Rather randomly, I decided to check back on the website yesterday, after not having visiting there for over a year, and low and behold, the first beta of version 2.0 [self-mirror] was released yesterday! :-D. Unfortunately, I’m not really doing any reverse engineering or assembly level work right now, so I have no reason or need to test it :-\.
... So yes, just wanted to call attention to this wonderful program being updated, that’s all for today!