Yes... if you go to Google's customized page there are "widgets" you
can load onto your page and one of them is a free text messaging
client. I have it set up on my personal Google page. If you don't
know how to customize your personal Google home page, I've got a post
on my BLOG that links you to everything and explains how to do it.
Check it out... email me if you have any questions. (e-mail address removed)
This is my Google BLOG. I also have a freeware site that I will post
for you but there isn't a separate freeware program that I know of to
do what you are talking about... just widgets, which are free... Go to
Mighty Joe's Google BLOG to get the information you need...