From jump +‎ station, from the name of an early search engine, JumpStation.

jumpstation (plural jumpstations)

1. (Internet) A web site that acts as a portal, offering links to many other sites on a particular topic.
   • 1997, Gary Gach, Writers.net: Every Writer's Essential Guide to Online Resources and Opportunities:

     Future Fantasy offers a searchable online book catalog and notifies readers of current events at the store and in the field in general. It also provides a jumpstation of hyperlinks to other stores, publishers, online magazines, original fiction, […]

   • 2001, Richard Templar, Finding Facts:

     If you right-click on a website listed on a jumpstation, you will be given various options including 'open in new window'.