Public Domain Software Library for AIX
Software library server with packages for AIX releases: 3.2, 4.1, 4.2, 4.3, 5.1.
http://aixpdslib.seas.ucla.edu/

GNU Scientific Library
The GNU Scientific Library (GSL) is a numerical library for C and C++ programmers. It is free software under the GNU General Public License.
http://www.gnu.org/software/gsl/

GNU Scientific Library
The GNU Scientific Library (GSL) is a numerical library for C and C++ programmers. It is free software under the GNU General Public License.
http://www.gnu.org/software/gsl/

Interactive Software Development and Renovation Software
ASF+SDF compiler runtime library, Meta-Environment, ATerm Library, SDF2 Parser generator, Completa, SGLR (Scannerless Generalized LR parser), ToolBus.
http://www.cwi.nl/htbin/sen1/twiki/bin/view/Meta-Environment

Libxslt - the XSLT C library for Gnome
Libxslt is the XSLT C library developed for the Gnome project. Libxslt is based on libxml2 the XML C library developed for the Gnome project. It also implements most of the EXSLT set of extensions functions and some of Saxon's evaluate and expressions extensions. People can either embed the library in their application or use xsltproc the command line processing tool. This library is free software and can be reused in commercial applications (see the intro). Includes a link to a tutorial.
http://xmlsoft.org/XSLT/

SM Software
Software to direct read and write Excel XLS files. TXLSFile is a Borland Delphi library, OLE XLSFile is an ActiveX library for using in VB, C++, etc..
http://sm-software.com

Web Developer's Virtual Library
A library of articles and tutorials covering HTML, software, graphics, and understanding how the internet works.
http://wdvl.internet.com/WebRef/Help/Begin.html

Digital Library of Information Science and Technology
(DLIST) Developed by the School of Information Resources and Library Science and the Arizona Health Sciences Library at the University of Arizona using Open Archives Initiative (OAI) compliant Eprints v.2 software.
http://dlist.sir.arizona.edu/

NOVA Plaza Business Library
FREE Business Information and Small and Home Based Business Resource Center offers select reviewed links to free business advice, mentoring, marketing, web services, travel information, insurance, tax advice
http://www.novaplaza.com/library.shtml

Code Generation Library
A dynamic library used to extend Java classes and implement interfaces at runtime. [Open source, Apache Software License]
http://cglib.sourceforge.net/