1) Adium
One of the best IM clients ever made. It supports nearly every client ever made, only skype isn’t supported. Video and voice chat are in development. It is one of the best applications I have ever tried. For a blogger it is great as you can connect on any protocol and be chatting in minutes.
2) Backdrop
A lot of the time you will be taking pictures of windows within your OS, especially for tutorials or designers. The problem is, not every one wants to see your wallpaper or your icons. As well as this I use my desktop for storing some personal information. Backdrop provides you a very simple way to hide your desktop through the use of a solid background or a chosen picture of you choice. It hides everything behind the current active application. A great app.

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