Hi Nishant, I've had good luck with CDoc from Software Blacksmiths <http://www.swbs.com/>. As I remember it from 10 years ago it'd a bit crusty nowadays. But hopefully they've kept it up with the times. The Development Assistant for C Programming tool is discussed/reviewed here <http://www.hitex.co.uk/general/cdac.html>. I've never used it. HTH, --Eljay Also, FlexLint from Gimpel Software <http://www.gimpel.com/html/products.htm> is also an excellent tool. Not quite what you are looking for, but I wanted to mention it.