Another ‘high profile’ Delphi app is to be shut down.
Skype is to be ‘retired’ in May of this year.
Pitty the replacement (Teams ‘Free’), not to mention ‘Skype for business’ still can’t come close.
Weird, it’s as if they can’t even look at the source to work out what they are ‘still missing’
I don’t think Delphi has been written in Delphi for a long time - probably not long after Microsoft purchased it in 2011 and turned it from a p2p app to a centralized app.
I think you have a Typo, I think you meant Skype written in Delphi
I think ‘skype for business’ was a ‘rewrite’ of skype which was Delphi. They seemed to never touch the delphi skype much at all (other than play with the way it saved history, and in doing so stuffed up the history search in more ways than one), but they were always trying to make skype for business look like skype. I never used skype for business after we went to teams, but at that time it still wasn’t a patch on skype.
Chat (part of teams), is ‘different’, but there’s still a few things it can’t do that skype can.
Skype has not been written in Delphi since Microsoft bought them out and convinced them to move to Microsoft technologies.
You could argue that it was a lot better when it was still a Delphi app but I’m biased 
Here’s some history from the Internet archive: Skype for Windows Built Using Embarcadero’s Delphi IDE | Press Releases
And the Skype company came from Estonia.
I tried via David Millington, who lives there, to see if there was anyone from the Delphi days that we might be able to talk to.
But we didn’t come up with a result. 
You are not wrong, enshitification has made it progressively worse over the years.
I still use skype with my elderly parents - I guess we’ll have to find another platform.
I remember on one trip to Borland in Scotts Valley I racked up a USD$300 hotel phone bill - I was literally dialing up to my isp in Australia as I couldn’t get email to send while connected to AOL (yes it was a long time ago). The trip after that, wifi was everywhere and skype made calling home easy!.
Kids these days have no idea how real the struggle was 