Notts County sign winger Genaro Snijders, ex-Newcastle striker Adam Campbell and attacking midfielder Kyle Da Silva.
Plymouth Argyle sign midfielder Josh Simpson on a one-year deal after he rejected a new contract at Crawley Town.
New-signing Matt Taylor could lead Newport County next season, says manager Tarry Butcher.
Burton have signed rookie Norwich goalkeeper Remi Matthews on loan until January.
League Two Leyton Orient sign Mansfield Town striker Ollie Palmer on a two-year deal for an undisclosed fee.
Ex-Yeovil Town captain Joe Edwards signs as a free agent for League One side Colchester United.
Carlisle have turned down a formal offer for teenage midfielder Kyle Dempsey.
League Two side York City sign full-back Eddie Nolan on a one-year deal following his release by Scunthorpe United.