ClassicRotation

Every World of Warcraft version, not just Classic Era.

• TBC Anniversary (2.5.6): rotations for all nine classes with TBC abilities. Mutilate, Steady Shot, Mangle, Lifebloom, Earth Shield, Vampiric Touch, Unstable Affliction, Felguard, Seal of Command/Blood, Arcane Blast stacks and so on. Healer mode for Holy Paladin, Holy/Discipline Priest, Restoration Shaman and Restoration Druid.
• Wrath of the Lich King abilities for all ten classes, including the Death Knight with runes and runic power: diseases first, Obliterate and Frost Strike, Scourge Strike, Heart Strike, Howling Blast on Rime. Proc-driven priorities: Hot Streak, Maelstrom Weapon, Art of War, Sudden Death, Taste for Blood, Lock and Load, Molten Core, Decimation, Eclipse. Used on Titan Reforged and on 3.3.5a private servers.
• 3.3.5a (Interface 30300) gets its own download, ClassicRotation-1.19-wotlk335.zip. The old client has a different API and cannot load the modern glow library, so that build has its own TOC and a built-in button glow. It is tested on a real Lua 5.1 runtime against the 3.3.5a API: spellbook by index, shifted cast and aura fields, localized item types, hexadecimal GUIDs, combat log as event arguments.
• Mists of Pandaria Classic (5.5.x): every one of the 34 specializations, including the Monk. Holy Power, Chi, Shadow Orbs, Burning Embers, Demonic Fury, Soul Shards and Eclipse are read directly. The spec comes from the game's specialization choice, and the settings panel offers a fourth button for Druids.
• WoW Forever and Retail: these versions hide combat data from addons and prohibit addons that compute a rotation, so ClassicRotation shows the game's own Assisted Combat suggestion in its icon and lights the matching button. Nothing hidden is read; there is no look-ahead or reminder layer there.
• The version is detected from the client's interface number. If an expansion has no module for a class, the previous expansion's module is used.
• Blood Death Knights and Brewmaster Monks count as tanks for the taunt suggestion even without a shield.
• Mage Arcane Blast / Arcane Charge stacks and Monk Stagger, which sit on the player as debuffs, are now read by the core.
• TBC and Wrath poisons, super, runic and endless mana potions and mage mana gems are recognised in the bags.
• From MoP on, sharpening stones and weapon oils are no longer suggested, because only shaman weapon imbues still exist there.