ezBooks for the GST is probably the best SOHO sector accounting package available in Australia at this time.

ezBooks can be run on a cash or accrual basis. It offers all the controls you expect from systems costing many time more. It produces invoices, statements, writes cheques, does stock management, bank reconciliations, Business Activity Statements, trial balances, year ends, and much more. But it remains easy to use with some revolutionary design featurers which make it genuinely user friendly. The lite version is ideal for the small business which accounts on a cash basis and which still wants to use a physical pad of invoices at the point of sale.