Available versions are listed below.

Current Release:

Download and Install Instructions:
Close all applications, Excel in particular, to avoid possible confusion from on-screen clutter.
There are two options to download What'sBest!
1. WB-WINDOWS-17.0.exe: This option tends to be more convenient because the files are unzipped automatically. First run WB-WINDOWS-17.0.exe.
Then, press the Unzip button to unzip the files. In order to unzip the files to a non-default folder, specify the path to that folder before pressing the unzip button.
2. WB-WINDOWS-17.0.zip: This method may be of use if anti-virus software on your computer makes it difficult to run a .exe file. The first step is unzipping the files to an arbitrary folder.
Then, open the extracted folder and run SetupInstall.exe.

What'sBest!
Version
Operating
System
Microsoft® Excel® File SizeDownload
17.0 (.exe) Windows Excel 2019, 365, 2016, 2013, 2010, 2007 and 2003. 111 MB
17.0 (.zip) Windows Excel 2019, 365, 2016, 2013, 2010, 2007 and 2003. 111 MB

Older Releases:

If you have a 64-bit version of Excel installed, then you need to download the 64-bit version of What'sBest. If you have a 32-bit version of Excel installed, then you need to download the 32-bit version of What'sBest.
Before installing What'sBest we recommend you confirm whether you are running a 32 or 64-bit version of Excel. The majority of Excel users are running a 32-bit version of Excel on a 64-bit version of Windows.
From Excel 2013 or newer, select File|Account|About Excel. From Excel 2010, select File|Help. The information displayed will confirm whether the 32 or 64-bit version of Excel is installed.

What'sBest!
Version
Operating
System
Microsoft® Excel® File SizeDownload
16.0 (32 Bit) Windows Excel 2019, 365, 2016, 2013, 2010, 2007 and 2003. 55.2 MB
16.0 (64 Bit) Windows Excel 2019, 365, 2016, 2013, and 2010 -64 Bit. 63.5 MB
15.0 (32 Bit) Windows Excel 365, 2016, 2013, 2010, 2007 and 2003. 55.2 MB
15.0 (64 Bit) Windows Excel 365, 2016, 2013, and 2010 -64 Bit. 63.5 MB
14.0 (32 Bit) Windows Excel 2013, 2010, 2007 and 2003. 48.3 MB
14.0 (64 Bit) Windows Excel 2013 and 2010 -64 Bit. 55.2 MB
13.0 (32 Bit) Windows Excel 2013, 2010, 2007 and 2003. 46.4 MB
13.0 (64 Bit) Windows Excel 2013, and 2010 -64 Bit. 51.7 MB
12.0 (32 Bit) Windows Excel 2013, 2010, 2007 and 2003. 46.4 MB
12.0 (64 Bit) Windows Excel 2013, and 2010 -64 Bit. 51.7 MB
11.1 (32 Bit) Windows Excel 2010, 2007 and 2003. 36.7 MB
11.1 (64 Bit) Windows Excel 2010 -64 Bit. 40.5 MB

Note: What'sBest! 32 or 64-bit format will depend on Excel, not Windows.