d3.js free–mac is a great javascript library for plotting graphs. I use it to plot data from csv and tsv files.

You need to run a webserver to serve your files. I use an alfred workflow to run a local webserver on my mac: (see oreilly d3 setup for a fuller explanation)

cd /Users/hereismydatafolderthatiwishtoservelocally
python -m SimpleHTTPServer 8888 &

tend to view/print from firefox, as css3 transform: translate is better supported currently in firefox than safari or chrome.

• stacked grouped bar chart
• square circle spiral illusion
• color game
• stacked–to–multiples bar graph
• scott murray's d3 tutorials
• gridlines
• select tutorial
• basic bar chart
• bar chart text append
• oreilly d3 book
• api reference
• variable precision in d3 format