|(language)||ALEF - A programming language from Bell Labs. ALEF
boasts few new ideas but is instead a careful synthesis of
ideas from other languages. The result is a practical general
purpose programming language which was once displacing C as
their main implementation language. Both shared variables
and message passing are supported through language
A window system, user interface, operating system network code, news reader, mailer and variety of other tools in Plan 9 are now implemented using ALEF.