[beachy]

Decades ago there was an amazing piece of software from lotus when I worked there called magellan. I remember the first time I saw someone search, and find results in text documents, spreadsheets and many other of the common formats of the day.

That was in 1989 and today I mostly search my computer using find and grep commands, since that's what just keeps working.

[nukst]

I should try adopting find and grep, but on Windows I'm currently using this and I'm very happy with it: https://www.voidtools.com/downloads/

[Multicomp]

I use Void Tools Everything to find files by name, and AstroGrep for finding information in them.