As a scientist, I use a mix of Incanter, Quil, and gg4clj bridge to R's ggplot2 for visualization in clojure (none of these outputs to a browser though).
R's ggplot2 beats Incanter (or anything other charting library) by a large margin in its excellent mix of conciseness and power, but I find Quil pretty nice for animations (superimposing data on geographical maps, for example).
Hadn't seen those libraries before, thanks for the links.
I have to say, Quil is the least Clojurey library I have ever used, and I find it very, very primitive. There's definitely a huge gap for a project built with idiomatic Clojure bindings that can handle both nice graphical stuff but also stodgy charts, with basic stuff like annotation layouts etc. I think something that could work really well if anybody finds the time is a port of G:
