For this type of use, a SQL database makes the most sense, and Linux has several SQL database server options. GNU SQL, for example, is a free, portable multiuser relational database management system. MySQL, available through the Linuxcare site, is a well-established free SQL database alternative that is available for a large number of operating systems. Yet another source of free software is distributed under the GPL license but not under the auspices of the GNU Project. Many of them are listed on the Free Software Foundation site, and others can be found on sites maintained by Linux distributors themselves.
Instant messaging is an increasingly popular utility among geographically dispersed teams.
It enables two or more people to exchange text messages on a whiteboard, simulating a discussion without voices. The Gale and Jabber programs, similar to AOL and Microsoft's products, both support instant messaging. It includes message forums, e-mail, chat, and instant messaging, all in one package. A variety of Linux utilities can map keyboards to different character sets, translate documents, and create international versions of software. One place to start is GNUjdoc , a central archive of Japanese translations of GNU documents.