Is Azureus Vuze streaming in the sense that you can watch a movie or TV show while you're downloading it? It is possible, but we think BitTorrent has the better solution. You can download content at a small fraction of its playback time, queue an unlimited number of downloads that run while you sleep, use RSS feed subscriptions that notify you of new content, and rely on faultless auto-restart of downloads that were interrupted by, say, suspending your computer. While you're watching the first piece of content that Azureus Vuze brought in for you, it is pulling in countless others and sharing it with the community. We see it as next-generation streaming.
Although it is possible to blend LDAPv3, Kerberos, BerkeleyDB, Zeroconf, policy-based password services, and single sign-on to create the ideal directory server, Apple has done that work for Unix developers and admins in Open Directory. The key components of the directory service client and server components built into OS X are available from Apple as part of Open Directory, which is itself part of Apple's Darwin open source effort. Apple added value to the open source elements that it pulled together for Open Directory by integrating them, subjecting the integrated suite to commercial-level validation, and tuning everything for scalability. Users and administrators of OS X Server will find that Apple's commercial implementation of Open Directory offers easy administration through Server Admin GUI, and ubiquitous compatibility with prevailing directory and authentication standards.
It almost goes without saying that Darwin's Open Directory project does not represent the entirety of OS X's directory services. However, Darwin's Open Directory server, its plug-in architecture, as well as its abstracted client APIs and utilities work out of the box and are exceedingly well-documented. Apple credits the open source projects from which Open Directory is derived. Apple's contribution to the integration of these projects, their administrative interfaces, and their documentation makes Open Directory a solid choice among open source directory services.
Here's something else that almost goes without saying: Wireshark, nee Ethereal, takes the Bossie for network protocol analysis. Wireshark lacks many features found on pricey commercial network analysis tools, but what it does do, it does extremely well. An exceptionally powerful analyzer, Wireshark provides a wide range of default decoders and parses out traffic threads with ease. It's so good, in fact, that many of those pricey commercial tools use it as their packet parsing engine. If it’s on the wire, Wireshark will help you make sense of it, and present the data in a clear, concise manner. Don’t expect any fancy automatic problem diagnosis or troubleshooting – that’s up to you.
Though a relative newcomer to the wireless sniffing space (as compared with NetStumbler), Kismet has wide appeal. It accepts a wider range of wireless cards -- any card that uses rfmon (raw monitoring mode) -- and it can capture both beaconing and non-beaconing networks. Kismet uses a passive approach, as opposed to NetStumbler's more active scanning. Both are good choices, but Kismet seems to have a stronger technological backbone, and it certainly has wide community support. Kismet gets our Bossie for wireless sniffer.
Read more about networking in InfoWorld's Networking Channel.