Someone mentioned TAS !
TAS Books still runs fine for me. First transaction was entered in 1992 - updated for Y2K - now running in Win7 VM with no problems. Old fashioned software - paid one off for the software (and got a printed manual !) then annual maintenance for upgrades until it was taken over by Sage (?). As a Chartered Accountant (retired) it does everything needed - even has a report writer allowing properly formatted I&E / Balance sheet, with each account summarised into the appropriate line. Looked around recently for an equivalent for a small business - key requirements no online / no subscription / ability to export all data if needed. Couldn't find anything - would really like to hear any suggestions.