One very reliable site is
http://www.filehippo.com/
Which hosts this great program at
http://www.filehippo.com/download_imgburn/
this link seems to be more reliable than some of the other current 'official' links.
Many great freeware programs (and utilities like Java, Flash, Shockwave) which are invaluable to the PC builder and Technician. Not as extensive a list as, perhaps
http://www.majorgeeks.com
but a fine list and it is kept quite up-to-date.