Eidolon is a native Win32 (or 64-bit) coded COM add-in for Excel to provide the ability to import and export information to and from databases and text files in order to produce time location diagrams.


In order to run Eidolon you will need a Windows version of Excel 2000 (32-bit) or above OR Excel 2010 (64-bit) or above (Mac versions of Excel are not supported).

Note: Eidolon requires as a minimum Windows XP SP2, Windows Vista or Windows 7. Eidolon has not been tested on Windows 8.x or 10 or with Office 2013 or 2016 however unless Microsoft has broken something Eidolon should work with these versions of Windows and Office. You can use either 32-bit or 64-bit versions of Windows but at this time you need a 32-bit version of Microsoft Office. I am working on releasing a 64-bit build of Eidolon very soon for those of you with 64-bit Microsoft Office.


Eidolon is fundamentally different from Korax in that it is a COM (Common Object Model) native code add-in for Excel not an advanced spreadsheet. Because of this the installation is completely different and you may need technical support from your IT department if you do not have administrative access to your machine.

Eidolon Setup

There are now two versions of Eidolon. One for the 32-bit installation of Microsoft Office (usually installed into C:\Program Files (x86)\Microsoft Office\OfficeXx\) and the second a new 64-bit build for those few out there who have a 64-bit installation of Microsoft Office (usually installed into C:\Program Files\Microsoft Office\OfficeXx\).

Click one of the links below to download the appropriate version of Eidolon 1.7c:

Simply run the setup programme as either the Administrator or a Power User and following the simple instructions (Note: you must run the setup programme as an Administrator on Windows Vista/7/8.x & 10 and above).

The installation programme provide an example spreadsheet of test information along with MAP files and text files to help those of you new to this to get started in conjunction with the Tutorials below.

2 thoughts on “Eidolon

  1. Farhoosh Lameei


    I have installed 64-bit on Excel 2010 but I don’t see it in the ribbon. Please advise! Thanks

    1. David Post author


      The most likely explanation is that you have a 32-bit version of Microsoft Office running on a 64-bit machine. The 64-bit version of Eidolon is intended for a 64-bit build of Microsoft Office not a 64-bit version of Windows. You should be able to test this. If your installation of Excel (assuming default installation) is in C:\Program Files (x86)\Microsoft Office\Office14\ then its 32-bit and you need the 32-bit version of Eidolon however if your installation of Excel is in C:\Program Files\Microsoft Office\Office14\ then you do have 64-bit version and we will need to investigate further.

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