Livingston secure the signings of former Alloa centre-half Ben Gordon and ex-Dunfermline full-back Ross Millen.
Dale Hilson has joined Queen of the South and Omar Kadar has signed for Alloa Athletic, say Forfar Athletic.
Goalkeeper David Crawford returns for a second spell with Alloa Athletic after leaving Arbroath.
Midfielder Burton O'Brien and defenders Kyle McAusland and Dougie Hill sign for Alloa Athletic.
Rangers begin promotion quest against relegated St Mirren 2014-15 runners-up Hibernian begin against Dumbarton The new Rangers manager, Mark Warburton, will hope to put the Ibrox club on a path to promotion when his side open their Scottish Championship campaign at home to relegated St Mirren on 8â
Mark Docherty turns down an offer of full-time football to join Dumbarton after leaving Championship rivals Alloa.
Midfielder Ryan McCord switches from Alloa Athletic to Scottish Championship rivals Raith Rovers.
Alloa Athletic striker Kevin Cawley and Queen's Park midfielder Darren Miller sign contracts with Dumbarton.