This extension requires one license per seat

Requires Unity 4.6.0 or higher.

RageSpline is a Unity and Unity Pro compatible tool for creating and editing smooth 2D vector graphics. It features anti-aliasing, color gradients, emboss, texturing, automatic physics, great iOS/Android performance and cool example games.

Requires Unity 4.3.x

For SVG import, check RageTools
For Animation and Text, check RageTools Pro
RageSpline + Tools + Tools Pro combo: RageSuite