Show pages on same level in sidebar – widget

Hello. there is great plugin to show one level of subpages in sidebar.
Is there any plugin which made same thing with pages on same level?

Example (i have this hierarchy):
– Parent 1
– – Sub 1
– – Sub 2
– – Sub 3
– Parent 2
Now im looking for plugin which show same level pages so i want on Sub page 1 this pages: Sub 1, Sub 2, Sub 3
And on Parent 1 page shows: Parent 1, Parent 2

Do you know some plugin?

Thanks a lot