Factor (programming language)

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Factor

Paradigm	multi-paradigm: concatenative (stack-based), functional, object-oriented
Developer	Slava Pestov
First appeared	2003
Stable release	0.99 / August 24, 2023 (2023-08-24)
Typing discipline	strong, dynamic
OS	Windows, macOS, Linux
License	BSD license
Website	factorcode.org
Influenced by
Joy, Forth, Lisp, Self

Factor is a stack-oriented programming language created by Slava Pestov. Factor is dynamically typed and has automatic memory management, as well as powerful metaprogramming features. The language has a single implementation featuring a self-hosted optimizing compiler and an interactive development environment. The Factor distribution includes a large standard library.