Addon Development Tools

Libraries

• Sol
• Luna
• WaitTimer
• More Libraries on Curse

Developer addons

• DevUtils
• EventWatch
• FunctionWatch
• InGameVarBrowser
• InGameScripts
• Lua Explorer
• More Dev tools on Curse

Editors

• Free interface development environment (IDE) for Lua programming. Ships with the software development kit (SDK) and stand-alone compiler and linker. An addon developer must-have: Lua for Windows
• AddOn Studio for WoW Has a WYSIWYG XML UI designer; just ignore the part about needing WoW
• AddOn Studio 2010 for WoW Has a WYSIWYG XML UI designer; Works with Cata
• WoW UI Designer (actually, the UI part doesn't work)
• List of lua - and WoW-based editors

Other

• AddOn Wizard for RoM: A stand-alone tool for creating RoM Addons;
• Game archive file (.fdb) extractors:
  • Original FDB Extractor;
  • Terestria's FDB Extractor.
  • fdb-Extractor 2 FDB Extractor.
• Lua language service for developers using the Microsoft Visual Studio IDE.

Development references, guides & notes

• Official Runes of Magic user fora:
  • European forum;
  • US forum.
• CurseForge;
• Programming in Lua;
• .fdb file format information on Xentax wiki.