Inspect Libraries, Frameworks and Applications

Library Inspector, created by Orion Transfer:

“…is a simple tool for inspecting the contents of compiled object code, archives, dynamic libraries (dylib), frameworks and applications.”

You won’t need this tool on a day-to-day basis, however, at some point you may find it helpful to “Quickly dump libraries containing Objective-C code to header files” as a means to compare/contrast API releases.