We do not have a download file for the latest version (5.60), but you can try downloading it from the developer's site
Download version 5.22.0.526 from Software Informer
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The file is clean, see the report.
Version: 5.22.0.526 (x86)
Date update: Oct 12, 2016
File name: efficientcalendar-port.zip
Size: 21 MB