Torquay midfielder Darren Garner and defender Lee Andrews have signed new deals with the club.
Garner, 33, who began his career at Plymouth came to Plainmoor on a freee transfer from Rotherham in June 2005.
Andrews, 23, was a youth player on Carlisle's books and had loan spells at Rochdale, York and Torquay.
Boss Ian Atkins said: "We have got 12 players in and signed and I am happy with that. Now we have got spaces for another six to come in."