Excel Consulting, Add-Ins, and VBA Development by JKP Application Development Services
Featured:
RefTreeAnalyser
Understand complex Excel workbooks at a glance. Visualize precedents and dependents, spot circular references, navigate across sheets and objects, and accelerate audits and troubleshooting. Download my top-notch spreadsheet auditing tool RefTreeAnalyser.
What I do
Products
I develop bespoke Excel tools for customers and also Excel add-ins for all users. Visit the Products page to find out more!
Services
I offer Excel consulting services pertaining to any aspect of Excel and VBA. My Services page shows examples of the 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.
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.
Excel
articles
I've written many articles about Excel, VBA, Office Script and loads of other things. Visit my Excel articles pages!
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.
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.
What's new on this site
English and/or Dutch content