Under the "Reporting" tab in the backend, there is a tab called "Areas of Expertise" that will allow you to export a report that shows each member company within each area of expertise.
The list shown above is sorted by area of expertise and member. You can add custom fields using the Gear icon in the top right-hand corner and you will also be able to filter down by individuals and members. This report will work the same way for both companies and individuals.
- Note: By default, this report will show "Current Members" only.