ArchivesBlogs is a Wordpress-based aggregator for blogs by archivists and about archives and archival issues. It is now hosted by ibiblio.org.
djabberdjaw is an experimental Jabber bot, written in Python, using Django for its administrative interface.
Helios (formerly Fac-Back-OPAC) is faceted, backup OPAC, using Django for the interface and Solr for the indexing. It is originially based on Casey Durfee's "Open Source Endeca in 250 Lines or Less," as presented at Code4lib 2007. Gabriel Farrell of Drexel University is currently the lead developer.
I'm investigating the use of HTTP interfaces to do lightweight, on-the-fly metadata transformation from a variety of sources. Currently, my emphasis is grabbing known records from Z39.50 and transforming them for consumption by a variety of client applications.
mail2rss.pl is a rewritten version of another script written by Nick Gerakines. His script was a good starting block, but Feedvalidator.org noted that the RSS it produced was invalid. I believed that the areas in which it failed are rather important and needed to be fixed so we could adhere to standards.
pymarc is a Python module for working with bibliographic, authority, etc. data in MARC format. The module's current lead developers are Ed Summers and Gabriel Farrell. Much of my work has involved working with the MARC-8 to Unicode transformation.
Setting Up Umich AFS On Ubuntu is surprisingly easy, as long as you have the proper configuration information I used two resources to assist me in the process: your Ubuntu or Debian Box Athena-ish, which is specific to MIT's Athena environment, and Native AFS Support on OS X, which is specific to Michigan.
worldcat is a Python module for interacting with OCLC's WorldCat APIs, including the WorldCat Search API and the xID APIs (xISBN, xISSN, and xOCLCNUM).
zgw is an experimental, lightweight Python-based HTTP gateway for interacting with Z39.50 servers.