OpenOffice is not really behind, they just need to seriously think about going 64-bit soon, otherwise they WILL fall behind.

The computer industry is evolving fast, and there are a lot of Open Source programs that need to catch up. In a few years 8 GB of RAM will be standard, and 16 to 32 GB will be what 8 is now. Software really needs to catch up, when an application is 64-bit, what that really means is the processor is processing it at a higher bit rate, and yes, maybe it uses more memory, but another thing anyone that knows anything about computers, is memory is easy to come across nowadays. There are nothing but advantages to using 64-bit applications, and people can say what they want, but anyone who knows anything about computers knows that they evolve fast, and a month ago 64-bit was a tomorrow thing, but now 64-bit is today, it's becoming widely standard, and in a few years, you'll be hard pressed to find a new 32-bit computer. Flash can VERY easily be replaced by the new HTML5, Java, and the other open standards of web design. Things like Java, PHP, and HTML are very open, flash is owned very specifically by Adobe, which is why Apple is moving away from it.

The only downside to using 64-bit web browsers is Adobe's lack of a 64-bit flash plugin, however flash is hopefully going to be a thing of the past too, because the web is something that should be open, and adobe is EXTREMELY closed. I also read on a forum (don't know if it's actually true) that Mozilla will be coming out with a native 64-bit firefox soon. About the browsers, I am currently using Namoroka 64-bit, and it runs WAY faster on my system then the 32-bit firefox.

Free openoffice for windows 10 64 bit