Is the source code to Advogato available?
Yes. Advogato is implemented using mod_virgule, an Apache module. Mod_virgule was originally developed by Raph Levien. Patches and improvements to mod_virgule have been provided by many members of the free software community. On 1 Oct, 2006, Advogato transitioned to a newer version of mod_virgule maintained by Steve Rainwater. Both versions of mod_virgule are free software licensed under the GNU GPL. The current mod_virgule changelog is also available online.