Issue 9 of o3 magazine is now available. This issue looks at how to build your own professional magazine (digital or print) using Open Source tools. This is basically a step by step guide to how we build o3 magazine.

Building Telephony Systems with OpenSER is a new book from Packt, which acts as a step-by-step guide to building a high performance Telephony System. Written by Flavio E. Goncalves, this book teaches users how to develop a fast and flexible Session Initiation Protocol (SIP) server using OpenSER.

This article takes you step-by-step through several good, but too often neglected, techniques for command-line operations. Learn about common errors and how to overcome them, so you can learn exactly why these UNIX habits are worth picking up.

"When Mozilla developers decided to incorporate the Cairo subsystem and build a new graphics layer from scratch, they also decided to completely rework the system that renders text in the browser."

"Have you wanted a full-functionality web-server, media host, bit-torrent client and NAS box, all fully remote-controlled? Want to build it out of spare parts? Well then..." The guys at bit-tech have their Linux guru explain a complete networking solution built from old junk. Contains scripts, step-by-step instructions and lots of pics.

Adopt 10 good habits that improve your UNIX® command line efficiency -- and break away from bad usage patterns in the process. This article takes you step-by-step through several good, but too often neglected, techniques for command-line operations. Learn about common errors and how to overcome them, so you can learn exactly why these UNIX habits are worth picking up.

One of the best pieces of news related to the recent release of version 3 of Mozilla’s Firefox browser is that most popular extensions now work with it. In this post, I’ll present an extensive guided tour to my favorite, free Firefox extension of all: iMacros.

"Lately I've been investigating how Mozilla's build and test system works (there's a number of pieces that tend to have a pretty tight integration and I wanted to learn more). I asked developer Ben Hearsum and he kindly obliged. I've included the questions and information here in the hopes that others will be able to learn from it, as well..."

We’re done. Firefox 3 is going to be launched very soon. In anticipation of this long-awaited event, the folks in the Mozilla community have been writing extensively about the new and improved features you’ll see in the browser.