Libslash is a library allowing for other mods to use commands in chat to change settings, open windows or do pretty much anything else desired.

LibSurveyor

LibGuard

LibSkillicon

LibWBToggler

a base for among others the related dps meter

provides the following slash-commands:/acp - prefer party size, no say/acb - prefer band size, no say/acps - prefer party size, fall back to say/acbs - prefer band size, fall back to saySzenario and S...

LibCooldown

LibAchievements

For addon developers to encode LUA data structures in json format or decode strings into LUA data structures.Supports wstrings. So one should be able to encode GameData.Player.name, though please repo...

LibDateTime provide locale date and time, formatting function, compare function and clock callbackUsed in TomeTracker

For addon developers to easily get the current date and time and format it into a compact string.Requires LibStubUsage:local now = LibStub("LibCompactCurrentDateTime-1.0")now.GetCurrentDateTimePack()...

LibStub is a simple versioning stub meant for use in Libraries. It is meant to be a cross-community library sharing system.https://www.wowace.com/projects/libstubExample usage:Add the following t...

Library to serialise LUA objects as wstrings

LibAddonButton

A dependency addon/lib if you have an addon that needs to know the range of things. 

LibPickle

This seems to be some kind of translation library.