Excel Consulting, Add-Ins, and VBA Development by JKP Application Development Services

Products

I develop bespoke Excel tools for customers and also Excel add-ins for the general public, like my top-notch spreadsheet auditing tool RefTreeAnalyser. Check out our products.

Services

I offer services pertaining to any aspect of Excel and VBA. My Services page shows you examples of services I provide. You will also find a list of recent projects there.

Training

I created the only Excel course aimed at engineers: Excel for Engineering Professionals.

My Excel training page lists other training options.

Newsletter

Subscribe to our news letter or check out the archive. There is no set frequency, I just post something when I have time. In any case, it is all about Excel.

Free Excel downloads

I develop custom-made applications using Excel® and VBA and Access and VBA. Have a look at various (free) downloads, including some very popular ones.

Who is Jan Karel?

Would you like to learn more About me? On this page you can get to know me a little better and also find a short list of presentations I've given over the past years.