• Process Explorer
• FileMon
• HFSleuth - Enables you to explore the HFS+ B-Trees (attributes and catalog) interactively.
• jtool2 - (Mach-O Analyzer) jtool is a drop in replacement for otool(1), nm(1), strings(1), and segedit(1).
• lsock - Using the poorly documented com.apple.network.statistics PF_SYSTEM provider, you can get real time notifications of socket activity.
• kdv
• jlutil
• joker (Deprecated) - This tool (which shares some logic with the jtool) is custom designed for macOS and iOS kernels.
• supraudit
• XPoCe (2)
• Binary Pack - The best of OpenSource.Apple.Com for iOS.
• QiLin - The QiLin Jailbreak Toolkit.
• Guesstalt - A libMobileGestalt example for iOS (only), accompanying this article.
• procexp - Process Explorer - for Mac OS X and iOS!
• Chapter 18: JKextStat for iOS - This simple, but efficient kextstat(8) replacement is the first tool to provide this much needed functionality on iOS.