Crawley have strengthened their defensive options with the signings of Ryan Dickson and Lanre Oyebanjo.
Left-back Dickson, 27, spent last season with Colchester and made 35 appearances for the Reds' League One rivals.
Oyebanjo, a 24-year-old right-back, made over 100 appearances in a three-year spell at York.
Both players turned down new deals at their respective clubs to join John Gregory's side, each putting pen to paper on two-year contracts.
"Several clubs at our level were keen to sign Ryan but he's excited about what we are trying to build at Crawley," Reds boss Gregory told the club's official website.
"I'm delighted to have Lanre here because he's a player I have been keen to sign for a number of months now."