'Streaming Server', and 'Replicator'

Streaming Server

Darwin Streaming Server, the open source version of Apple's QuickTime Streaming Server technology that allows you to send streaming media to clients across the Internet using the industry standard RTP and RTSP protocols. Based on the same code base as QuickTime Streaming Server, Darwin Streaming Server provides a high level of customizability and runs on a variety of platforms allowing you to manipulate the code to fit your needs. Who should use Darwin Streaming Server? While sharing the same code base as QuickTime Streaming Server, Darwin Streaming Server is an open source project intended for developers who need to stream QuickTime and MPEG-4 media on alternative platforms such as Windows, Linux, and Solaris

http://apple.com/

Replicator

Automatically backup files, directories, even entire drives! New features allow you to specify which files should not be copied, and also which days a file should be skipped.

http://www.karenware.com/powertools/ptreplicator.asp