Included in the Developer Toolbox Update Set available on Share (link to Share in the post).
For Service Portal Pages, very similar to the "Try It (Portal)" and "Try It (Select a Portal)" tools for Catalog Items. This one just looks better than the OOTB popup window shown by the "Try It" UI Action. Both a Form button and List context menu UI Action.
Simply click on the Portal's link and the Page will be displayed in a new tab/window. The Portal you select will be saved as a User Preference record and displayed at the top of the list the next time.
I've attached some XML files for the UI Action and UI Page records. There are also some UI Message records for the title and instructions in the UI Page. These make it easier to support multiple languages without having to change any code. Try it out in a personal dev instance first.
Update August 8, 2023: Updated the UI Action to also show as a List context menu. The UI Page has been updated as well to save the last used Portal and display it at the top of the list.
