I have a Drupal background, an open source CMS and I'm the author of the Comparison of Charting modules. I'm a co-maintainer of these charting related modules, for which my major goal is to implement Chart 2.0:

• Chart (25K sites), Charts (10K sites) and Visualization (3K sites).
• Quant (0,5K sites), a hidden gem for charting in Drupal.
• Views Calc, required by the D6 version of Chart.

I'm the (new) project owner of these distributions/modules:

• ArrayShift (+ related module and theme), a distribution to create question/answer sites similar to the sites on the StackExchange platform (only for D6 today, about to be upgraded to D7, D8 planned).
• Visitors, which also includes charting features but without depending on any of the typical charting modules.
• Visualize, a tiny charting module, only available for D6 today, but about to be upgraded to D7 also.
• CSV Chart (depends on Chart), to add charts in a node (no need for the PHP code filter ...). Still D5-only, to be upgraded to D6/D7 soon.

I'm also a co-maintainer of the forena module, for which I created most of its community documentation, and contributed a major upgrade of its documentation, about how to configure, use and extend it.

Refer to my Profile on Drupal.org for more details and/or for contacting me.