OmniFocus AppleScripts

Catch Up Automatically
Sets all the selected repeating actions to “Catch Up Automatically.”
Defer to Tomorrow
Changes the Defer Until date of the selected actions to tomorrow.
Defer 2 Days
Changes the Defer Until date of the selected actions to 2 days in the future.
Defer 1 Week
Changes the Defer Until date of the selected actions to 1 week in the future.
Open Links
Treats the text of the selected actions as URLs and opens them.

There are also scripts for other applications.