This is not a must have seeing how most people would not use it but for those that need more in a way of a calculator for computing math problems Microsoft has a free program called Microsoft Mathematics. It even has a nice conversion tool.This would be a great addition for students to have on their computer.

http://www.microsoft.com/downloads/en/details.aspx?FamilyID=9caca722-5235-401c-8d3f-9e242b794c3a

https://forums.wincustomize.com/403989

Thanks for the link Doc. I just went through it and noticed there are some that are against this type of software. I am not saying this should replace teaching children to solve math equations by using their brain. This is a more advance tool for dumb people like me that would spend half a day trying to figure out what this tool can do in seconds. If you do not think this is a good idea then you probably are against anything that helps with productivity. We live in a different age. I do not like that children are encouraged to take calculators to class but times have changed and methods of doing things have changed whether we like it or not.

Hmm it seems to support only text. I'll keep my clcl.

LibreOffice

http://www.libreoffice.org/

A must  have is http://slickscreen.com/ just grate for big monetors ,it is my main browser now(24inch).you can use the free one or the pro.AND customize it to your liking.

Is a good one, as I wrote about it also. http://drjbhl.joeuser.com/article/404347/Jarte_42_and_LibreOffice_33

If only I had this one yesterday!

Excellent Captinmoonlight!

"Hi"doc,thought you would like it ,new  avatar I see.Cheers

That's cause Doc is really 'Doctor Know'. Its his secret identity so don't tell nobody.

j/k Doc. You da man.

Tux Paint

http://www.tuxpaint.org/