JetXLL worksheet functions for Excel

JetXLL is a quick, easy and affordable way to create custom worksheet functions and complete XLL addins for Microsoft Excel using managed code (such as C#). With JetXLL you can add simple attributes to your existing code to expose that code as a worksheet function in a Microsoft Excel spreadsheet. 

JetXLL is currently in beta test. We expect to release the first release soon, but if you would like to join the beta test and get to use JetXLLPro for free, now, please email us at beta (at) jetxll.net. Once you've been accepted or the beta test you will be able to access our support forum at UserVoice and contribute your ideas and help to guide our development priorities.

Recent Entries

Optional worksheet parameters and default values
Your custom worksheet functions can take optional parameters. The users of your worksheet can then decide whether to supply them…
By Len | Comments (0)
Integrating your addin with Excel - the function wizard
Whilst it's very easy to create a worksheet function using C# with JetXLL simply by adding the [WorksheetFunction] attribute to…
By Len | Comments (0)
Debugging a JetXLL addin
As you saw in the previous article, it's easy to build a custom worksheet function for Excel with JetXLL. Of…
By Len | Comments (0)