Wpa supplicant

wpa_supplicant is a free software implementation of an IEEE [802.11i] supplicant for Linux, FreeBSD, NetBSD, QNX, AROS, Microsoft Windows, Solaris, OS/2 and Haiku. In addition to being a WPA3 and WPA2 supplicant, it also implements WPA and older wireless LAN security protocols.

WWW Official Site

Features

Features include:

WPA-PSK and WPA2-PSK
WPA3
WPA with EAP
RSN: PMKSA caching, pre-authentication
IEEE 802.11r
IEEE 802.11w
Wi-Fi Protected Setup

Included with the supplicant are a graphical [user interface|GUI] and a command-line utility for interacting with the running supplicant. From either of these interfaces it is possible to review a list of currently visible networks, select one of them, provide any additional security information needed to authenticate with the network and add it to the preference list to enable automatic reconnection in the future.
The graphical user interface is built on top of the Qt library.
wpa_supplicant can authenticate with any of the following EAP methods: EAP-TLS, EAP-PEAP, EAP-TTLS, EAP-SIM, EAP-AKA, EAP-AKA', EAP-PWD, EAP-EKE, EAP-PSK, EAP-FAST, EAP-PAX, EAP-SAKE, EAP-GPSK, EAP-IKEv2, EAP-MD5, EAP-MSCHAPv2, and LEAP.

Vulnerability to KRACK

wpa_supplicant was especially susceptible to KRACK, as it can be manipulated to install an all-zeros encryption key, effectively nullifying WPA2 protection in a man-in-the-middle attack. Version 2.7 fixed KRACK and several other vulnerabilities.