Any other software similar to Microsoft Office?  

dont know dear

not yet

Lotus Smartsuite is a very good alternative, and the price is certainly more realistic.
I used Lotus Smartsuite Millenium edition for a while, and the composite programs are the same format as Microsoft Office. The package contains Lotus 123 as a spreadsheet, Lotus Word Pro as the word processor and a wonderful program called Lotus Organizer which will prove to be very useful. Even after returning to Microsoft, I kept Organizer for a while due to it's first class calendar facilities.
If you buy a second hand copy which is a few years old you should be able to but one quite cheap.

Lotus Smartsuite is a very good alternative, and the price is certainly more realistic.
I used Lotus Smartsuite Millenium edition for a while, and the composite programs are the same format as Microsoft Office. The package contains Lotus 123 as a spreadsheet, Lotus Word Pro as the word processor and a wonderful program called Lotus Organizer which will prove to be very useful. Even after returning to Microsoft, I kept Organizer for a while due to it's first class calendar facilities.
If you buy a second hand copy which is a few years old you should be able to but one quite cheap.

I think it is only Open Office

I'd recommend visiting http://www.corel.com/ depending which features of office you use, Corel offers a package of WordPerfect & QuattroPro for less than $100.00. They also offer free trials through their website.

I think Star Office used to be one of the product from Sun. Lotus Notes is another that I have used

sun office, or so my brother says. i'm not very familiar with other progams. i'm not very good at microsoft office either.

if you are not satisfied with open office you can try other free programs that resemble microsoft office like sun solaris star office and lotus.

http://www.openoffice.org