Feather is a beautiful, simple, and extensive set of open-source icons in SVG format. Includes options for pretty much any navigation element or UI widget.
Command-line based SVG inspection tool that inspects the content of SVG files. Provides information about the file, the elements in the SVG and hierarchy. It can also be integrated into a project as a dependency to examine SVG in scripts.
This article appears in net magazine issue #302. Buy it now or subscribe.