I have released a few open source Python packages for the Django web framework and the Plone CMS that I currently maintain at bitbucket and github.com
gormcsv
django-csvimport
django-cookieless
django-oraclepool
collective.contentgenerator
cookie-audit
ilrt.contentmigrator
ilrt.formalworkflow
ilrt.migrationtool
Along with some older now superceded PHP software.