aireplay-ng is not available for Mac OSX. How can I inject frames into the network? I am only concerned with sending deauth packets.
EDIT: Kismac2 is also no longer being maintained however the current build still works on OSX High Sierra
Kismac2 has a very large set of functions, including deauth.
Although kismac-ng (a previous incarnation) has been abandoned, kismac2 is now the tool of choice for most pentesters and wardrivers who need a quick overview of networks, and several attacks.