KOReader — a document viewer application, originally created for Kindle e-ink readers. It currently runs on Kindle, Kobo, PocketBook, Ubuntu Touch and Android (2.3+) devices. Developers can also run KOReader emulator for development purpose on desktop PC with Linux and Windows and Mac OSX (experimental for now).
Lor — a fast and minimalist web framework based on OpenResty.
Example:
local lor = require("lor.index")
local app = lor()
app:get("/", function(req, res, next)
res:send("hello world!")
end)
app:run()
Luacheck — a tool for linting and static analysis of Lua code.
Usage:
luacheck src extra_file.lua another_file.lua
Output:
Checking src/good_code.lua OK
Checking src/bad_code.lua 3 warnings
src/bad_code.lua:3:23: unused variable length argument
src/bad_code.lua:7:10: setting non-standard global variable embrace
src/bad_code.lua:8:10: variable opt was previously defined as an argument on line 7
Checking src/python_code.lua 1 error
src/python_code.lua:1:6: expected '=' near '__future__'
Checking extra_file.lua 5 warnings
extra_file.lua:3:18: unused argument baz
extra_file.lua:4:8: unused loop variable i
extra_file.lua:13:7: accessing uninitialized variable a
extra_file.lua:14:1: value assigned to variable x is unused
extra_file.lua:21:7: variable z is never accessed
Checking another_file.lua 2 warnings
another_file.lua:2:7: unused variable height
another_file.lua:3:7: accessing undefined variable heigth
Total: 10 warnings / 1 error in 5 files
luaposix - a wrapper over POSIX function to fill the gaps of lua standard library. This makes lua capable of implementing everything, only with this single library.
middleclass — a simple OOP library for Lua. It has inheritance, metamethods (operators), class variables and weak mixin support.
Quick look:
local class = require 'middleclass'
local Fruit = class('Fruit') -- 'Fruit' is the class' name
function Fruit:initialize(sweetness)
self.sweetness = sweetness
end
Fruit.static.sweetness_threshold = 5 -- class variable (also admits methods)
function Fruit:isSweet()
return self.sweetness > Fruit.sweetness_threshold
end
local Lemon = class('Lemon', Fruit) -- subclassing
function Lemon:initialize()
Fruit.initialize(self, 1) -- invoking the superclass' initializer
end
local lemon = Lemon:new()
print(lemon:isSweet()) -- false
O
OpenResty — a full-fledged web platform by integrating the standard Nginx core, LuaJIT, many carefully written Lua libraries, lots of high quality 3rd-party Nginx modules, and most of their external dependencies. It is designed to help developers easily build scalable web applications, web services, and dynamic web gateways.
P
Pegasus.lua — an http server to work with web applications written in Lua language.
T
Telize — a REST API built on Nginx and Lua allowing to get a visitor IP address and to query location information from any IP address. It outputs JSON-encoded IP geolocation data, and supports both JSON and JSONP.
