the Simon Fraser University Library Research Instrument (SLRI) is "a web to Z39.50 client interface" brought to you by the good folks at SFU. it's an adaptation of the web to Z39.50 gateway developed by Harold Finkbeiner at Stanford, licensed under GPL and recently spied at sourceforge.net as well.
as seen at freshmeat: "User interface changes, including early support for variable window sizes, smoother pagination, etc. Executable renamed from gutenbook.pl to gutenbook." see gutenbook.org for more.
to excerpt Eric: "Features of 1.2 include: moved staff module from a Perl codebase to C codebase... This will enable us to make a future release an Ariel "plug-in"; added ability to attach pdf documents to an email message rather than posting them to the Web; added Alphabetical sorting to user list database; fixed bugs in TIFF/PDF conversion and other interface problems; [many] changes in server scripts." check it out yourself at the Prospero page at the Prior Health Sciences Library. Very cool; now I can reimplement it here.
from the Gutenbook site: Gutenbook is an app for downloading, and reading of etext books published electronically from the Gutenburg Project. it's fairly basic but it works, and has ports for linux (tk or qt) and windows. not only is this a needed app, it looks like a great starting point if you are interesting in learning to hack one of these environments (gtk-perl or kde/qt).
as seen at freshmeat: "An installation script, bugfixes, urls for each reference for the text-formatted e-mails, and an option to stop getting empty e-mails." See biomail.sourceforge.net for more.
according to Peter: "Version 0.3 is a complete rewrite of the Avanti code base after a rethinking of the basic architecture and design. The result is the beginnings of a simple, highly modular and scalable client/server architecture using its own native messaging protocol for client/server communication." For more, see the Avanti site or you can telnet to the live demo to try it out.
Robert writes in: "There is rather good support for basic ISIS software (unfortunately they seem to be moving towards MS Windows) but it is very difficult to get free software (also free of charge) for constructing CGI. So I wrote my free iAPI (in C) to help others deal with problems I had before with ISIS." it's licensed under the GNU GPL...
seen on many lists recently is XMLMARC, a "Java client/server program [which] converts MARC to XML based on flexible maps and simplified, yet detailed DTDs for bibliographic and authorities formats." Its license is free for non-commercial use but requires consent for redistribution, and their broader experiment is described here. They seem to be aware of MARC.pm... it would be great to see a side-by-side feature comparison of the two.