ESK is currently distributed in two versions, both of them free, designed to meet different installation and usage needs.

If you want to try the add-in without installing it permanently, or if you do not have permission to install third-party software on your computer, you can download the “Portable” version. By simply opening the .xlam file with a double-click—just like any other file—you can use the full ESK toolbar for the current work session only. When Excel is closed, the ESK toolbar disappears without leaving any traces on the system.

This table outlines the main features and differences between the available versions:

Zip archive (.zip)
Portable (.xlam)
Can be used “on the fly” (no installation required, for the current session only)
Can be permanently installed in Excel
Writes configuration files (in the program folder or in the user’s Windows personal folder)
Includes all tools provided by the add-in
Allows you to recall the most recently used settings for each tool
Recommended version for macOS systems *

Note:
* partial compatibility with Excel 2016 onwards for Mac