Chrome App : Marmoset tool.

The Marmoset is a Chrome App which lets you create gorgeous code snapshots.
This video tutorial let you see how can be used:

The YouiDraw online tool.

This online tool named YouiDraw is a good tool for graphics and design artists.
You can be found at the official website.
You can use 240 most popular Google Fonts were added into YouiDraw web apps with they all styles.
This tool comes with: Drawing, Logo Creator and Painter online tool.
I like the YouiDraw Logo Creator tool.

You can use it free or you can pay for extra features, like export SVG format :

• Free Start Trial for free ;
• Monthly Plan $9.99/mo;
• Yearly Plan $99.99/yr

Many tutorials can be found at YouTube channel.