- Arts Interactive - New media company based in Castletown.
- Castletown - Ancient Capital of Mann - Includes information, history, photos, notices and reports about events and activities in the town.
- Castletown Golf Links Hotel - An hotel with an 18 hole championship golf course. It is situated on a peninsula with water at all sides. Includes prices, booking information, and photos.
- Castletown Holiday Cottages - Carrick Cottages and Mill Street Cottages in Castletown
- PDMS - Provides software development and related IT services. Projects include business systems, web developments and mobile solutions to the public and private sector.
- Pooil Vaaish Quarry - Manufacture a wide range of stone products from black limestone and also import granite worktops, and fireplaces. Contains news, list of products, and contact details.
|