Here is a simple trick to help you build out your ServiceNow Service Catalog. Sometimes it is nice to add external links to other sites in the Service Catalog. You can build your Service Catalog be a "one-stop shop" to request items AND find sites at your company.
Step 1: Add new category
1. In the Left Navigator Bar > Go to Service Catalog > Maintain Categories
2. Click New
3. Add a new category
Step 2: Add Content Item
This is the trick. Add a "Content Item", not a "Catalog Item".
1. In the Left Navigator Bar > Go to Service Catalog > Content Items
2. Click New
3. Add a new Content Item. Make sure the Content Type is External Content, and Target is New Window/Tab
You can add any type of link. Links to external sites, KB articles, etc.
Step 3: View Results!
New Catalog Category (ServiceNow Sites)
New External Links
Isn't that awesome?!
Mike