The web pages at cocotron.org are generated by a CGI program written in Objective-C using the Foundation framework. It is running on a Debian Linux shared host at 1&1 internet using the Cocotron Foundation framework.
Content creation for cocotron.org is done on Mac OS X. Site testing is done locally using the Apache web server and Safari included with OS X.
When the site is being developed locally the CGI program is running on Mac OS X using Apple's Foundation frameworks.
When the site is on the internet at 1&1's servers the CGI program is running on Linux using Cocotron's Foundation framework.
(The blog is still done at blogger...)