Radare2
https://github.com/radareorg/radare2/
Rkhunter
https://rkhunter.sourceforge.net/
Maltrail
https://github.com/stamparm/maltrail
Lynis
https://cisofy.com/lynis/
LMD
https://www.rfxn.com/projects/linux-malware-detect/
Chkrootkit
https://www.chkrootkit.org/
ClamAV
https://www.clamav.net/
REMnux
https://remnux.org/
Tiger
http://download-mirror.savannah.gnu.org/releases/tiger/