Bonjour, formerly Rendezvous, is Apple Inc.’s trade name for its implementation of Zeroconf, a service discovery protocol. Bonjour locates devices such as printers, as well as other computers, and the services that those devices offer on a local network using multicast Domain Name System service records. The software is built into Apple’s Mac OS X operating system from version 10.2 onward, and can be installed onto computers using Microsoft Windows operating systems. Bonjour components may also be included within other software, such as iTunes. Bonjour is released under a terms-of-limited-use license by Apple. While it is freeware for clients, developers and software companies who wish to include it in a software package may need a licensing agreement. The source code for mDNSResponder is available under the Apache License.