Launchd

Unified operating system service management framework, starts, stops and manages daemons, applications, processes, and scripts in macOS

launchd is an init and operating system service management daemon created by Apple Inc. as part of macOS, iOS, iPadOS, watchOS, tvOS, and visionOS to replace its BSD-style init and SystemStarter. There have been efforts to port launchd to FreeBSD and derived systems.