OpenOffice.org is a free and powerful office suite. The look and feel might be a bit less intuitive compared to Microsoft’s Office suite, but it suits my needs. And because it’s free, open source and most important: good, it deserves to at least try it out if you never did before. I haven’t found a changelog yet … The changelog can be found here.
>> OpenOffice.org website
>> Download OpenOffice.org 2.4.0