Alternative apps to Inkscape:

Inkscape Alternatives
Open source vector graphics editor with similar capabilities to Adobe Illustrator, Corel Draw, Freehand, or Xara X.
Using the W3C standard Scalable Vector Graphics (SVG) file format you can manipulate shapes, paths, text, markers, clones, alpha blending, transforms, gradients, patterns, and grouping. Inkscape also supports Creative Commons meta-data, node editing, layers, complex path operations, bitmap tracing, text-on-path, flowed text, direct XML editing, and more. It imports formats such as JPEG, PNG, TIFF, and others and exports PNG as well as multiple vector-based formats. Read more.