Welcome to this domain which is owned by software developer Greg Keogh. The domain is currently being used for software development and testing.

There isn't much to see here besides the page you're looking at now. For more interesting reading, follow some links in the Related Websites section below.

I am currently self-employed, running a software development business from my home office in suburban Melbourne, Australia.

I have fourty five years experience in the software industry using a diverse set of languages and platforms. Since 2002 I have primarily been using the .NET platform for software development, with excursions into other languages and tools when needed.

Languages

COBOL, ALGOL, FORTRAN, IBM S/360 assembler, CLIST, REXX, Mathematica, C++ (Borland and Microsoft), JAVA, JavaScript, Visual Basic, VB.NET, PowerShell, Python, F# and C#.

Toolsets

ASP.NET WebForms, web service APIs, Windows desktop Forms and WPF, Xamain, Blazor, MAUI. Note that I refuse to use any JS frameworks such as Angular, React, etc.

Operating Systems

ICL George III, Fujitsu and IBM mainframes, UNIX, OS/2 v2 to 4, Windows™ 3.1 to present, Linux, Android, iOS, macOS.

Industries

Payroll, cryptography, vision testing, integration, retail, medical equipment management, data cross-tabulation.

Note that all of the following websites were designed for viewing in a desktop web browser. They will probably appear squashed or jumbled on a mobile device.

https://www.orthogonal.com.au

Greg's hobby site full of science, music, maths, computers and other weirdness.

https://dev.azure.com/orthogonal

Azure DevOps repositories with free sample code, projects, utilities, applications and Wiki pages.

http://www.quintic.net.au

Hosted in an Azure static website. Reserved for future use.

http://www.quintic.com.au

Hosted in an Azure static website. Currently rented by the Anarchist Communist Atheist Wine and Cheese Appreciation Society.

http://www.orthoprog.com.au

Reserved for future use. Hosted in an Azure static website.

http://115.70.55.109

The Nancy Street Network home server. Only used for occasional software previews or downloads.