If Vern Yip is reading this, I still need your help. Though Sweet Home 3D tops Google's SketchUp in a number of areas, it's still not much help for someone with no design sense.

This makes it even more odd that I was so excited when I spotted Elizabeth Krumbach's post on the open source, cross platform 3D interior design modeling application. I've lived in my house for nine years -- we have shades on all the windows, but only one window has actual curtains. It's just that SketchUp is a fun little application, and it's one of the only applications I've tried to run with WINE (and failed miserably in the attempt).

Sweet Home 3D, as Krumbach says, is pretty simple once you get the hang of it. Because it's open source, there's the potential to model a structure (and the stuff that fills it) to a whole new level of precision. Perhaps the only drawback (and it could be a machine quirk, as everything's being difficult today) was its seeming somewhat crashprone on my Ubuntu 9.04 64-bit laptop. That could also be chalked up to my learning curve. But let's take a closer look.

As a Mac user, I'm often disappointed at the lack of good open source software designed specifically for my operating system so I was really happy to read the news at TUAW.com that Sweet.fm is now an open source project. If you have a Mac and like to stream music from Last.fm, this is one app you need to check out.

Want to hear an odd little theory (or perhaps more of a personal hang up) of mine? I don't own a Mac, and have never owned a Mac -- and I can say without reservation that many Macs I've worked with have been great, robust little machines. I also have never owned any Apple device (iPod, iPhone, or even a Newton). There are a few reasons on that front, one being that I don't have a Mac, and historically I've seen that these devices just don't play as well on other platforms as they do on Macs.

Here's the rub: Macs are nice, contained sorts of bio-domes, technological terrariums of sorts. The hardware and software all work together by design (which makes computing pleasant when all goes to plan and frustrating when it doesn't). When you need (or want) to use an outside service, problems ranging from aesthetic annoyances to complete non-communication arise.

Open-Xchange is an open source groupware and email alternative to Microsoft's Exchange Server. Though Open-Xchange previously supported Mac systems to some degree, it wasn't truly a cohesive, native experience.

If you're running OS X and use Open-Xchange, syncing your calendar, email, tasks and appointments between desktop, server, and mobile device just got a lot more functional, and much easier.