Aaron O'Connor, Lenny Pidgeley, Lee Minshull and captain Andy Sandell are among 11 senior players to be released by Newport County.
Striker O'Connor tweeted: "Wanna thank everyone at Newport County for an amazing few years.
Midfielder Adam Chapman has turned down a new deal to stay at Rodney Parade.
Shaun Jeffers, Max Porter, Jamie Stephens, Robbie Willmott, Ismail Yakubu and Mike Flynn are the other senior players to be released.
Youngsters Joe Parker and Kyle Patten have also left County.
Just seven players at the club are under contract for next season: Joe Day, Mark Byrne, Kevin Feely, Yan Klukowski, Aaron Collins, Tom Owen-Evans and Kieran Parselle.
New manager Terry Butcher has offered contract extensions to Darren Jones, Ryan Jackson and Andrew Hughes.
Pidgeley finished the season on loan at Mansfield, but O'Connor, Minshull and Sandell have been three of the Exiles' key players this term.
O'Connor scored 11 goals in 42 appearances, Minshull also made 42 appearances for the League Two side, scoring three goals, while fellow midfielder Sandell played 39 times.
Minshull joined Newport initially on loan in January 2012 and was signed permanently the following June, O'Connor and Pidgeley arrived two months later, while Sandell has been at the Welsh club since January 2012.
|Newport County retained list 2014-15|
|Shaun Jeffers||Joe Day||Darren Jones|
|Lee Minshull||Mark Byrne||Ryan Jackson|
|Aaron O'Connor||Kevin Feely||Andrew Hughes|
|Joe Parker||Yan Klukowski|
|Lenny Pidgeley||Aaron Collins|
|Max Porter||Tom Owen-Evans|
|Andrew Sandell||Kieran Parselle|