[CRidge]

As a word it looks pretty dead: https://www.google.com/trends/explore#q=shareware

[tfinniga]

The n-gram viewer goes back further, but only comes up to 2008. It looks like the usage started in the mid 80s, peaked around 95, and was almost dead in 2008.

https://books.google.com/ngrams/graph?content=shareware&year...

[Morendil]

Or similarly https://books.google.com/ngrams/graph?content=shareware&year...