Possible Duplicate:
Is there any way to get real-time compilation for LaTeX?
How can I see what am I writing in a TeX editor?
I've seen some websites, such as ones on the stack exchange, that are able to interpret and display latex code as you type. I'm curious if there are any freeware latex editors that can do that same thing... That is, compile and display in real time as the latex code is added. This will be very helpful to me to detect my errors earlier on rather than waiting until i've written a lot of code and then debug it.