Migrate SharePoint 2010 Search Thesaurus to SharePoint 2013

SharePoint 2013 changes the file format of the Thesaurus used for query synonym expansion. This script transforms the Thesaurus files used by SharePoint 2010 into a Thesaurus file that is suited for upload to SharePoint 2013.

https://gallery.technet.microsoft.com/office/Migrate-SharePoint-2010-43ad3c6d

SRx Core - SharePoint Search Health Reports

The SRx Core contains a suite of tests to aid with troubleshooting a SharePoint 2013 and 2016 on-premises search farm. This package surfaces complex diagnostics in standardized PowerShell reports. Operations staff can utilze SRx Core to check for farm health deficiencies.

https://gallery.technet.microsoft.com/SRx-Core-SharePoint-Search-d60113e9