- OSX collector - for forensic analysis
- MIDAS - Mac Intrusion Detection Analysis System
- OSX auditor - for forensic analysis
- Santa - binary whitelisting/blacklisting system
- Masochist - framework for creating XNU based rootkits
- Class-dump
- Mach inject - Inter process code injection for Mac OS X
- Hopper - Hopper disassembler (not free)
A collection of ios security related resources
- IDB
- iRET - iOS Reverse Engineering Toolkit
- DVIA - Damn Vulnerable iOS App for learning
- LibiMobileDevice - A cross-platform protocol library to communicate with iOS devices
Other amazingly awesome lists can be found in the awesome-awesomeness list.
Your contributions are always welcome!