Goalkeeper Mark Cousins, 31, joins following his release from the Daggers.
Craig Robson, the midfielder or defender, has signed a two year deal after a fee was agreed.
Still says Barnet supporters have a lot to be excited about next season - and more new faces could be on the way.
"He's a very strong defensive player who can play either at centre-half or in central midfield,” said Still on the club’s official website. “When I brought him to Dagenham & Redbridge two years ago, within a few weeks he showed his leadership qualities, strengths on the pitch and bridged the gap.
"Ever since then, he's received high levels of attention but we managed to keep him at Dagenham and I'm now delighted to bring him to Barnet.
"Supporters will love his wholehearted attitude and also his ability."
On Cousins, Still says the club have a “fantastic goalkeeper” after taking on the free agent.