Ok Accounting Systems and Software (OASYS) offers accounting software such as Client Write-up, Payroll, and Form 1120S Tax software and more.
We can even do custom applications.
We have programmed business applications including Client Write-up and Payroll since 1980 on several operating systems. Client Write-up for PCs (for MS-DOS) was introduced in 1994. The windows version was introduced in 2000.