[pankajtakawale]

StuffIt V3.10ß © Terje Mathisen 1989-91
Syntax: Stuffit <commands>
+|=[[hh:]mm:]ss | Delay for(+) or until(=) a specified time.
+45 will wait for 45 seconds.
=14:: will wait until 2pm.
+0 will wait until the kbd buffer is empty.
<character code> | Stuff a given character code.

stuffit +2 13
would feed "ENTER" to stdin after 2 secs.

Anything similar to stuffit on WinPE?

[bj-kaiser]

probably not exactly what you want, but what about

• www.autoitscript.com
  
• www.autohotkey.com

i think one could realise what you do with stuffit with one of the above.

[twalk482]

What functionality are you trying to reproduce?

Your post is fairly cryptic ... so, here is a go at the answer:

For Compression, you could use .CAB Files (There is a support tools utility that will help with creating these called CABARC.EXE, and I think EXPAND.EXE is included in PE)

For Sending Keystrokes, you could write a WSH Send Keys .VBS