Can't remember what object NGC7000 is? What about M72?
AstroCataLink is a GreaseMonkey
script for Firefox users. It automatically hyperlinks references to common astronomy catalogs to the SEDS database.
The example below shows AstroCataLink automatically creating a link while viewing CloudyNights, but it works on any website text.
The automatically-added link will open one new tab or window with the SEDS IC/NGC information relating to the catalog item. Links added by ACL are distinguished from existing links by an orange underline,
and a tooltip that pops up when the user hovers over.
Download it here.