Seed7 is an extensible general purpose programming language
designed by Thomas Mertes. It is a higher level language
compared to Ada, C/C++ and Java.

Major features include:

- user defined statements and operators,
- abstract data types,
- templates without special syntax,
- OO with interfaces and multiple dispatch,
- statically typed,
- interpreted or compiled,
- portable,
- runs under linux/unix/windows.

WWW: http://seed7.sourceforge.net/