Re: SourceSafe
"Anyway, in late 1990s, VSS was still better than nothing"
My mileage varied. Back in '98 a PHB decided to tidy up our VSS repo by deleting source to EOL products... Sadly he didn't know that deleting a file in VSS meant that the file, it's entire history and all previous revisions were also deleted. CVS was (and still is) better than that and it costs nothing.