Luton have signed former Peterborough and Brighton striker Craig Mackail-Smith on a two-year deal.
Bristol Rovers have signed former Northampton striker Billy Bodin on a short-term deal.
Carlisle have signed midfielder Joe Thompson on a short-term contract.
Fulham defender Liam Donnelly has joined Crawley on loan.
Striker Sam Hoskins has signed a one-year contract with Northampton following a successful trial at Sixfields.