RawTherapee is a free open source application for opening and editing RAW image files. It works on all major operating systems such as Windows, Linux and Mac OS X.
Google spreadsheets lets you create charts and graphs to visualize a data set. Let's take a look how to create a nice and simple chart in a matter of few clicks.
Ok guys, this stone sign in the water tutorial is a bit on the advanced side, but do not be afraid to have a go, simply follow the step-by-step instructions really carefully and you should be fine, go!
If you are a heavy twitter use, possibly with more then one account, than I suggest you to give Tweetdeck a try. You can arrange, schedule, monitor and manage your tweets with ease.