This is how the example chart on their homepage looks on my machine: https://i.imgur.com/al67CoQ.png https://i.imgur.com/al67CoQ.png - ugly font, labels crossin

This is how the example chart on their homepage looks on my machine: https://i.imgur.com/al67CoQ.png https://i.imgur.com/al67CoQ.png - ugly font, labels crossing their boxes. I think they're sending me an SVG that my browser renders poorly, but that's a horrible first impression. That said, the tool itself looks pretty solid, much better than the only other open source alternative I know (dia). Like many open source tools the UI design looks a bit old and it's chock full of advanced features that make the basic ones hard to find/use, but it's certainly usable. And it's browser based, which means it runs anywhere, including Chromebooks.