The Bit O' Red have added the former Leeds United and Ferencvaros forward to their squad ahead of the forthcoming Airtricity League season
The 30-year-old English striker has previously had spells with Leeds United, Stockport County and Hungarian outfit Ferencvaros, and Sligo manager Ian Baraclough believes that he is an good acquisition who brings experience to the squad.
"Anthony will bring a lot of strengths to our squad," said Baraclough. "He has a good record of scoring goals in the Football League, with around a one in three ratio. He has played with some very good clubs and has some great experience."
He continued: "Danny North is a couple of months away from returning and Anthony will hope to show what he can do.
"The prospect of the possibility of the two together later in the season is exciting. I think Anthony can make a big impact with us."
Elsewhere, Shamrock Rovers have also added to their squad with the signing of former Republic of Ireland under-21 international David Elebert.
The 26-year-old defender began his career at Preston North End before joining Scottish side Hamilton Academical. He moved to Icelandic outfit Fylkir in 2012 and has agreed to join Trevor Croly's side for the 2013 campaign.
Meanwhile, UCD have also bolstered their squad for the forthcoming season with the addition of Dinny Corcoran from Bohemians and Craig Walsh from Longford Town.
"We are happy that the two lads have decided to come on board with us for the new season," said UCD boss Martin Russell.
"Both are experienced players in the league and will add even more competition for places in our squad."