There are 2 repositories under ithkuil topic.
A community driven philosophical language
Yuorb: New Ithkuil Grammar S·T·I (Signification, Translation, Interpretation); Previous name: NiGHT (Nᴇᴡ Iᴛʜᴋᴜɪʟ Gʀᴀᴍᴍᴀʀ Hᴀɴ Tʀᴀɴsʟᴀᴛɪᴏɴ) website
GPLv3 licensed documentation for the constructed languages Ithkuil and TNIL
ëšho'hlorẓûţc hwomùaržrıtéu-erţtenļıls: A piece of software designed as an aid for memorization of the various parts of the constructed language Ithkuil.