The ChrysaLisp Type Font (CTF) filetype is the standard format for typeface on ChrysaLisp OS.
Visit https://github.com/vygr/ChrysaLisp for more information on the Operating System.
To install the fonts simply move the files to the fonts directory in ChrysaLisp.
All fonts are converted to ctf from ttf using the https://github.com/vygr/QtCTF tool. They are licensed by their respective copyright holders under the OFL License.