Need to create a logo, website mockup or any kind of digital illustration? You don't need to buy or download software to do so. Gravit is a robust illustration tool that works in your browser. If you've used other graphic design programs such as Illustrator or Photoshop, working with Gravit will probably be second nature to you. The webapp includes vector tools, such as a pen tool, line tool and Bezigon tool, as well as auto shapes. You can easily align objects, group them, clip them and work in layers. Your files can be exported to PNG, JPG or SVG, and you can also import these file formats as well as EPS files.
Gravit's public designs page showcases some impressive designs that others have been able to make with the app. Although it might not have all the features you'd get in Illustrator, this free tool is a powerful alternative.