Data storage
RefDB is a client/server reference database and bibliography tool for markup languages like SGML, XML, and LaTeX. It is suitable for standalone use for the purpose of self-archiving, but can be used as an institutional repository as well. Data storage proper is done in one of several supported SQL database engines. RefDB runs on Unix-like operating systems (Linux, FreeBSD, NetBSD, Mac OS X, Solaris) and on Windows/Cygwin. RefDB is licensed under the GPL.