FREE Adobe Illustrator and InDesign alternatives

After looking back at my previous post about a free Photoshop alternative, I realized I've never mentioned the Illustrator or InDesign equivalents. There are plenty of open-source options out there, but the two that I'd suggest are Inkscape (Illustrator) and Scribus (InDesign). Since they are free, there are a few extra installation steps involved, such as installing Ghostscript, but they seemed to work fine in the little time I used them. I really didn't have any need for them, but perhaps you might. It beats spending hundreds of dollars on the actual Adobe software if you're just looking for a vector graphics program, and a layout application