ECL stands for Embeddable Common-Lisp. The ECL project is an effort to modernize Giuseppe Attardi's ECL environment to produce an implementation of the Common-Lisp language which complies to the ANSI X3J13 definition of the language. The current ECL implementation features: * A bytecodes compiler and interpreter. * A translator to C. * An interface to foreign functions. * A dynamic loader. * The possibility to build standalone executables. * The Common-Lisp Object System (CLOS). * Conditions and restarts for handling errors. * Sockets as ordinary streams. * The Gnu Multiprecision library for fast bignum operations. * A simple conservative mark & sweep garbage collector. * The Boehm-Weiser garbage collector. * Threads using the POSIX threads library. * Unicode.