Popular vector file formats are EPS, PDF, WMF, SVG, or VML. There are few very good free vector editor software also. Below I have listed three very good free vector editors.
Inkscape supports many advanced SVG features (markers, clones, alpha blending, etc.) and great care is taken in designing a streamlined interface. It is very easy to edit nodes, perform complex path operations, trace bitmaps and much more. We also aim to maintain a thriving user and developer community by using open, community-oriented development.
The interface is tailored for high productivity: it does never get in your way. Creative Docs .NET tools are simple, yet powerful. All styles and attributes can be modified interactively with a minimum number of mouse clicks. A color gradient, for instance, can be modified directly by dragging its handles in the document window.