icsConverterWebapp
Google App Engine hosted Python webapp to convert a properly formatted .csv file to functioning .ics file. See my post here for details.
icsConverterWebapp Live: Used to be hosted at
http://icsconverterwebapp.n8henrie.com, but now updated version is live at
icw.n8henrie.com, source code at
https://github.com/n8henrie/icw.
icsConverter (desktop version) at GitHub here, compiled for OSX here.
Disclaimer: I honestly have no idea what I'm doing with Python, Git, Google App Engine, or really any of this... so be careful if you use this code.