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Source Lua is free software distributed in source code. It may be used for any purpose, including commercial purposes, at absolutely no cost. All versions are available for download. The current …

Lua is a powerful and fast programming language that is easy to learn and use and to embed into your application. Lua is designed to be a lightweight embeddable scripting language.

Lua books are available at the main online stores and also as e-books at Feisty Duck. When you buy a copy of a book published by Lua.org, you help to support the Lua project.

Lua 5.3 Reference Manual The reference manual is the official definition of the Lua language. For a complete introduction to Lua programming, see the book Programming in Lua.

Lua is free open-source software, distributed under a very liberal license (the well-known MIT license). It may be used for any purpose, including commercial purposes, at absolutely no cost.

Dec 22, 2025 · For a detailed introduction to the practice of Lua programming, see the book Programming in Lua, also available as an e-book. All reference manuals are freely available under …

If you are using the stand-alone Lua interpreter, all you have to do to run your first program is to call the interpreter (usually named lua) with the name of the text file that contains your program.

Dec 22, 2025 · To see how Lua programs compile to instructions for the Lua virtual machine, visit Lua Bytecode Explorer

When comparing values with different types, you must be careful: Remember that "0"==0 is false. Moreover, 2<15 is obviously true, but "2"<"15" is false (alphabetical order!). To avoid inconsistent …