Hi cafe, I wrote yet another tiny visualization tool for my purposes and uploaded it on hackage. splot is a tool for visualizing the lifecycle of many concurrent multi-stage processes. For example, I'm using it to find the performance bottlenecks in a distributed application: processes are tasks and tasks have stages like "task in queue", "validating", "running", "response in queue". http://www.haskell.org/haskellwiki/Splot The tool is very basic but sufficient for my purposes. I'll be happy if anyone else also finds it useful (or not useful, but tells me in which exact way). P.S. Remember, there's also http://www.haskell.org/haskellwiki/Timeplot - a tool with similar purpose but a different (and bigger) set of features. There's a new version coming in a few days. However, I wasn't able to quickly implement the functionality of splot in Timeplot, and I needed it quickly, so I wrote a separate tool. -- Eugene Kirpichov Senior Software Engineer, Grid Dynamics http://www.griddynamics.com/