This is not strictly a TeX-related question, but as
Concrete Roman fonts were designed by DEK and distributed with TeX, I hope to find an answer here.
I'd like to use the
Concrete Roman fonts on a website. However, finding ttf/otf files on the internet isn't easy. Are they available in any modern (=possible to use as web fonts) format? If so, what license are they available under? On CTAN I could only find mf/tfm files (useless for web) and Type 1 files (same). Googling didn't help a lot, the Wikipedia page directed me to this page with a non-working download link, this page suggests that the fonts are available under the SIL Open Font License (which AFAIR is rather permissive), but the download link leads to some other font catalogue apparently not containing Concrete Roman at all...