Multiple programming languages are named L, including:
A programming language started by Larry McVoy, with extensive help from Jeffrey Hobbs, Oscar Bonilla, and Tim Daly, Jr. It aims to wrap C-like syntax around core Tcl functionality.
A capability-secure and distributed language, developed by HP Labs. It is a derivative of lambda calculus, hence it is small, block-structured, dynamically-typed, and functional. It is both a language and an operating environment, like Smalltalk. It is capability-secure and distributed, like E.
A theoretical language with three (or four) instruction types used to discuss computability in Martin Davis' Computability, complexity and Languages (ISBN 9780122063824)
A subset of Common Lisp with multi-processing extensions by Rodney Brooks and Charles Rosenberg
