GeneDoc will do this for you for PC/Windows machines.
Look in the Seq Dialog.
>I am looking for a very simple utility that can run in the Win95
>environment that will take an input sequence of up to a KB and create the
>reverse-complement of it, and save that. The input could be either ascii
>or GCG or similar or even just copy-paste into the utility.
>Anyone know of a utility to accomplish this? Please remove NOSPAM in
>my address if using auto-reply functions.
>Marc Goldstein, Ph.D.
>magoldst at ix.netcom.com