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the ultimate Excel formula auditing tool.


Excel VBA Masterclass (English)
Excel VBA for Financials (Dutch)

Third party tools

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Best tool to repair corrupt Excel sheets and objects

Your Excel Expert; uw Excel specialist

Welcome to the website of

JKP Application Development Services.

If you are looking for an Excel specialist and an Excel and VBA expert you've come to the right place.

My core business is developing solutions using Microsoft Excel/VBA and Access/VBA. Integration with other (Office) programs is possible.

Need expert Excel help? Get in touch.

My Services page lists some example projects.

Need Excel or VBA training? Information about our Excel and VBA trainings can be found on our trainings page.

If you need more information about me, look at my English homepage.

To find out whether you've actually found an Excel expert, I invite you to browse through my Excel articles.

I also recommend to try my free utilities.

Click here for remote assistanceClick for remote assistance

Welkom op de website van

JKP Application Development Services.

Als u op zoek bent naar een echte Excel specialist en een Excel en VBA expert dan bent u aan het juiste adres.

De nadruk ligt op het ontwikkelen van toepassingen in Microsoft Excel/VBA en Microsoft Access/VBA. Ook integratie met andere (Office) programma's is mogelijk.

Kunt u de hulp van een Excel expert gebruiken? Neem dan contact op.

Op de Diensten pagina vind u voorbeelden van projecten.

Zoekt u Excel of VBA cursussen? Informatie over onze Excel en VBA trainingen kunt u op onze training pagina vinden.

Wilt u meer over mij weten ga dan naar mijn Nederlandse homepage.

Wilt u zelf beoordelen of u een echte Excel expert heeft gevonden, bekijk dan mijn Excel artikelen.

Probeer ook eens mijn gratis hulpprogramma's.

Klik hier voor hulp op afstandKlik voor hulp of afstand


What's new on this site:

(English and/or Dutch content)

Nieuw op deze site

(Engelse en/of Nederlandse artikelen)

The Amsterdam Excel Summit 2018: Dates are set!
Come and join us in Amsterdam on June 7 and 8, 2018 for our fifth famous Amsterdam Excel Summit. We have just fixed the dates so make sure you Visit the Amsterdam Excel Summit Website
Tue, 20 Feb 2018 16:40:00 GMT

Update: RefTreeAnalyser
RefTreeAnalyser 2.0 has just been updated. Improved performance of looking for dependents.
Wed, 15 Nov 2017 17:30:00 GMT

Name manager updated
Name Manager for Excel has been updated. Fixed an issue caused by a Windows 10 bug. Renaming a name now also fixes hyperlinks using that name
Tue, 31 Oct 2017 10:50:00 GMT

Update: Excel File Remediation Utility
The Excel File Remediation Utility has been updated to build 121. We have improved performance on a number of areas and added a way to report detailed statistics of multiple files.
Mon, 02 Oct 2017 17:05:00 GMT

New tool: Table Tools
I have added a new add-in to my site called Table Tools. This add-in makes your daily life with Excel tables a little simpler!
Wed, 20 Sep 2017 08:30:00 GMT

Update: RefTreeAnalyser
RefTreeAnalyser 2.0 has just been updated. Improved the formula report
Mon, 18 Sep 2017 15:30:00 GMT

Update: RefTreeAnalyser
RefTreeAnalyser 2.0 has just been updated. Improved performance on analysing conditional formatting formulas
Tue, 15 Aug 2017 13:20:00 GMT

Nieuw artikel: Cocreatie in Office 365
Ik heb vandaag een nieuw artikel toegevoegd over Cocreatie in Excel 2016
Thu, 29 Jun 2017 07:00:00 GMT