# List of Built-in Services

Qbs provides the following built-in JavaScript extensions to simplify operations that are expected to be needed often in project files.

File Service | Provides operations on the file system.
FileInfo Service | Provides operations on file paths.
Process Service | Allows you to start external processes.
PropertyList Service | Provides read, write and convert operations on property list files.
TextFile Service | Provides read and write operations on text files.
General Services | Provides various operations.