Dev:SpringBoardServices.framework

SpringBoardServices.framework is a C (and partially Objective-C) library that allows you to invoke functions in via IPC (Mach messages via MIG subsystem).

SpringBoardServices is a framework that is constantly changing. Almost every firmware has something different. Make sure you check the version if you use any function here.

SB functions
SB functions are the low-level functions that directly communicate with SpringBoard via MIG subsystem. See

SBS functions
SBS functions are often a higher-level abstraction on top of SB functions. A typical feature is they do not require the port parameter.

SBSSpringBoardServerPort
Get the Mach port (send right) that can communicate with the SpringBoard. The return value can be used in the SB functions.