File Type Generic IconGeneric Data Library
File Format Standard
Usage Open manually; may run a program or script when opened
Popularity ★ ★ ★ ★ ☆  Common

A library is a file that contains data referenced by an application. It may contain functions, classes, constants, variables, and other types of data that are used by one or more programs.

Libraries are often accessed using a linker, which is a function that loads data from a library into the program. While generic libraries may have a ".lib" extension, dynamic libraries typically have a .DLL extension (Windows) or a .DYLIB extension (Mac). Static libraries often have a .A file extension.

Open With

IconVarious programs


IconVarious programs

Updated November 16, 2009
Information from the PC File Extensions Reference