TOT CAPITA, TOT SENSUS
Our suggestions
Our daily discussions
Archives of general (ptafflist) to free software (ptaffgnu) mailing list discussions by people near to ptaff.ca.
Columns filled with numbers turned into images
ECMAScript (Javascript) library, distributed under the GPL license, that creates charts from (x)HTML tables.
Concatenate MIDI files
Perl software distributed under the GPL that does simple transformations on MIDI files.