Einked in a SVG editor that offers multiple layer support.
Einked is a truly offline, fully capable scalable vector art application. Begin with simple objects and shapes and work your way up to advanced shadings and detailed artwork.
Two things stood out for me about this SVG editor; multiple layer support, and access to image source. Access to source is a feature I have not seen in other apps and is a nice feature. This allows you to embed the code into a blog or website.