objective-see

LuLu is the free open-source macOS firewall

BlockBlock provides continual protection by monitoring persistence locations.

Like AutoRuns ...but for macOS!

macOS Malware Collection

OverSight monitors a mac's mic and webcam, alerting the user when the internal mic is activated, or whenever a process accesses the webcam.

Process Monitor Library (based on Apple's new Endpoint Security Framework)

process info/monitoring library for macOS

Network Monitor

File Monitor Library (based on Apple's new Endpoint Security Framework)

WhatsYourSign adds a menu item to Finder.app. Simply right-, or control-click on any file to display its cryptographic signing information!

Malware and other applications may install persistent keyboard "event taps" to intercept your keystrokes. ReiKey can scan, detect, and monitor for such taps!

Detect Evil Maid Attacks

sniff mouse and keyboard events

A DNS Monitor, leveraging Apple's NEDNSProxyProvider/Network Extension Framework

Visually explore all running tasks (processes) ....viewing its signature status, loaded dylibs, open files, network connection, and much more.

View and remove notification messages from Apple's "Notification Database"

And open-source version of % sfltool dumpbtm

Generic ransomware detector

Scan your computer for applications that are either susceptible to dylib hijacking or have been hijacked.

View all modules on that are loaded in the OS kernel

checks if an application is pristine (untampered) and from the official Mac App Store

The Art of Mac Malware

example project, utilizing Proc Info library