The most recent example would be FileBot which I bought a subscription for mostly because it is high quality and is free software (as-in-speech). I would have used less functional free (as in speech and beer) alternatives had the filebot source not been available to me.
Filebot homepage: https://www.filebot.net/
Source code: https://github.com/filebot/filebot
Edit: Actually, it's worth noting that the statement in the README arguably makes filebot non-free. "You may NOT use the source code to publish binary builds without explicit authorization." If that's actually supposed to be enforced by the terms of the license, filebot is definitely not libre software.
On the other hand, it's not clear at all whether this is prohibited by the license. It prohibits "Publishing binaries or competing clones that undermine the ability of the original author to make money from his work." I don't see why publishing a binary for free on a new platform would undermine this in most cases, given that the author already publishes free binaries for most platforms on the official website.
That said I just tried to build it for the first time (wanted to make a small improvement) and there are no documented build steps and a standard ant build doesn't work. There are open github issues where the author is very dismissive and just says basically "code not supported, just for educational purposes."
I poked at it for about 15 minutes but I've never used ant before and couldn't get the build working. That really saddens me. Unless things improve I won't be renewing my subscription. I'm pretty disappointed to say the least.
> free-as-in-speech (where you can easily recreate the speech yourself)
Freedom of speech has nothing to do with recreating the speech. The term "free speech" means "no censorship".
The connection, as I now understand it based on other comments here, is that "free speech" refers to a freedom relating to people's rights as opposed to "free beer", which refers to cost. In that sense I can understand the connection to free software in the sense that Stallman advocates for.