Carlisle have signed midfielder Jamie Devitt, St Mirren striker Kristian Dennis, Sutton forward Tobi Sho-Silva for an undisclosed fee and West Brom forward Owen Windsor on loan.
Dennis, 31, and Sho-Silva, 26, have both signed 18-month contracts.
Windsor, 20, has joined the League Two side until the end of the season.
Find all the latest football transfers on our dedicated page.