[chime]

I can vouch for Lookeen (circa 2012-2015). I set it up for 200+ users on Citrix and it worked great. I had the index for each user saved to their network share and yet the search was instant. It even indexed shared mailboxes. It barely used any CPU when doing background indexing.

It worked well with thin OSTs too but due to how Outlook and Exchange work, it would have to rebuild the index more often.

Definitely a blast from the past reading the word “Lookeen” but mostly good memories about it. I believe the ADMX integration was pretty decent too.