SMLserver is a Web server plugin for AOLserver, an Open Source multi-threaded Web server provided by America Online and used for large-scale, dynamic Web sites. SMLserver allows efficient threaded execution of Standard ML programs and inherits many of the great features of AOLserver, including the possibility of accessing a variety of different relational database management systems (RDBMSs), such as Oracle, MySQL, and PostgreSQL.
WDialog is a system to make dialog-centric Web applications. It imitates the behavior of widgets found in GUIs, but acts in an HTML/HTTP environment. It uses its own XML-based UI language, but callbacks are coded in a normal programming language: either O'Caml or Perl. WDialog is written in Objective Caml, an ML variant.