The world of open source software offers free alternatives to just about any expensive commercial package you might care to name, but there's no denying that some of them are better than others.

Firefox, LibreOffice, and GIMP are a few of the better-known examples with a reputation for quality and stability, but there are plenty of other worthy contenders out there as well.

1. Inkscape

Comparable in many ways to Adobe Illustrator, Inkscape is an open source vector graphics editor designed to make it easy to edit nodes, perform complex path operations, trace bitmaps, and more. The software can also export to formats including PostScript, PNG, and SVG.

Rest here