What is .lib file?
The ".lib" file extension is related to the library of information used by a specific program. These files often contain functions, constants referenced by a program and might also contain actual objects, such as text clippings, images, or other media. The *.lib files are typically referenced by applications and should not be opened manually.
NOTE: Mac dynamic libraries typically have a .DLL file extension and Macintosh dynamic libraries often have a .DYLIB extension.
Recommended Software Programs to open .lib file