WoW private servers

Vanilla: max lvl 60

https://elysium-project.org/ Rates: x1
https://www.classicwow.com/ Rates: x5
http://www.kronos-wow.com/ Rates: x1
http://www.magicwow.co.uk/ Rates: x1 RP-PvE, RP-PvP
https://www.nostalgeek-serveur.com/ Rates: x1
http://nostralia.org/ Rates: x1 (hosted in Australia)
http://retro-wow.com/ Rates: Instant 60
http://stormrage-wow.com/ Rates: x20
http://www.therebirth.net/ Rates: x1
https://valkyrie-wow.org/ Rates: x1
http://vanillagaming.org/ Rates: x1-x15
https://vanilla-servers.org/ Rates: x1

The Burning Crusade: max lvl 70

http://243vanilla.tk/ Rates: x1, x3 (Vanilla realm on TBC 2.4.3 client!!) PvE
http://www.ares-wow.com/ (TwinStar) Rates: x1-x12
http://www.excalibur-wow.com/ Rates: x2
http://www.wow-one.com/ Rates: x1-x3
https://hellground.net/ Rates: x2
http://www.korakion.com/ Rates: x1 (x2 weekends, x6 donors) PvE
http://looking4group.eu/ Rates: x1, instant 60
http://redsrealm.us/ Rates: x1
http://smolderforge.com/ Rates: instant 70
https://www.vengeancewow.com/ Rates: x1 (1-58: x2; optional instant 58)
http://wowcircle.com/en/ Rates: x1

Wrath of the Lich King: max lvl 80

http://www.dalaran-wow.com/ Rates: x1
http://dreamlandswow.servegame.com/ Rates: x1
http://elementarywow.com/ rates: x5
http://eternal-wow.com/ Rates: x2, x10, instant 80
https://firestorm-servers.com/ Rates: x5
http://frostgale.com/ Rates: x1 PvE
http://www.frostmourne.eu/ Rates: x1-x15
https://www.gamer-district.org/ Rates: x1-x7
https://heroicwow.net/ Rates: x12 PvP
http://icecrown.org/ Rates: x1 Blizzlike
http://nexuswow.org/ Rates: x1-x6
http://www.primalwow.org/ Rates: x1 PvE (progressive realm, ATM. Vanilla content)
http://www.thenagainn.com/ Rates: x2 [RP]
http://www.truewow.org/ Rates: x1
http://www.twinstar.cz/ Rates: x1
https://www.warmane.com/ Rates: x1, x7, instant 80
http://wowcircle.com/en/ Rates: x1 PvE, x5, x10, x15-x25, x100
http://www.wow-mania.com/ Rates: x1-x2 (double xp weekends)
http://wowmortal.com/ Rates: Instant 80

Cataclysm: max lvl 85

http://atlantiss.eu/ Rates: x1 Blizzlike
http://www.firestorm-servers.com/ Rates: x5
http://www.frostmourne.eu/ Rates: x1-x15
http://ice-wow.eu/ Rates: x1
https://monster-wow.com/ Rates: x12
http://remedywow.info/ Rates: instant 85 PVP
http://www.twinstar.cz/ Rates: x1
https://www.warmane.com/ Rates: x7, instant 85
http://wowcircle.com/ Rates: x1, x10-x25
http://wowmortal.com/ Rates: instant 85

Mists of Pandaria: max lvl 90

http://www.firestorm-servers.com/ Rates: x5
http://heroes-wow.com/mop/ Rates: x20, instant 90
http://pandawow.ru/en/ Rates: x10, x100, instant 90
http://tauriwow.com/ Rates: x1, x15
https://www.warmane.com/ Rates: x7
http://wowcircle.com/ Rates: x1 PvE
https://wow.freakz.ro/ Rates: x1 – x10

Warlords of Draenor: max lvl 100

http://www.firestorm-servers.com/ Rates: x5
http://wowcircle.com/ Rates: x2
http://wodempire.com/ Rates: x25

Legion: max lvl 110

http://www.firestorm-servers.com/ Rates: x3 PvE
https://monster-wow.com/ Rates: x12
http://wowmortal.com/ Rates: x7
https://titans-servers.com/ Rates: x5
http://valhalla-realms.com/ Rates: x0.5 – x5