Defender Greg Young and striker Anthony Wilson join from Buxton, while defender Jake Green makes the move from Matlock Town.
Young 35, is reunited with new Frickley boss Martin McIntosh having worked under him at the Bucks, where Young has played since 2014.
Earlier in his career, the Yorkshireman played in the Football League for Grimsby and at the highest level of non-league with Northwich Victoria, Halifax Town, Altrincham and York.
Former Mansfield youngster Green, 24, was recently released by Matlock due to work commitments though the Gladiators had said at the time they would be retaining his registration.
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