TBC Renewed
Burning Crusade 2.4.3 — Sunwell progression starts next month.
World of Warcraft private servers
WoW private servers across Classic, TBC, WotLK, and retail.
See also: Best World of Warcraft private servers
Aetherius Custom
Custom WoW realm: new continent, new class (Spellsword), 10-tier raid path.
Cataclysm Forever
4.3.4 Cataclysm with all tiers progressive. Currently in T13 (DS).
Vanilla Brotherhood
1.12.1 classic — no LFG, no transmog, no shop. 60-cap forever.
Wrathlight WotLK
3.3.5a Blizzlike WotLK realm. 1x rates, scripted raids 10/25 normal & heroic.