madmax

Once on the mega site right-click and download the patch you need.
Download page contains:
WoW-1.8.3.4807-to-1.8.4.4878-enGB-patch.exe WoW-1.8.3.4807-to-1.8.4.4878-enUS-patch.exe

Once on the mega site right-click and download the patch you need.
Download page contains:
WoW-1.8.4-enUS-patch.exe WoW-1.8.4.4878-enGB-patch.exe WoW-1.8.4-deDE-patch.exe WoW-1.8.4-frFR-patch.exe This is a cumulative update and includes all patches before it.

Once on the mega site right-click and download the patch you need.
Download page contains:
WoW-1.8.4-to-1.9.0-deDE-patch.exe WoW-1.8.4-to-1.9.0-frFR-patch.exe WoW-1.8.4.4878-to-1.9.0.4937-enGB-patch.exe WoW-1.8.4.4878-to-1.9.0.4937-enUS-patch.exe

Once on the mega site right-click and download the patch you need.
Download page contains:
WoW-1.9.0-deDE-patch.exe WoW-1.9.0-enGB-patch.exe WoW-1.9.0-enUS-patch.exe WoW-1.9.0-frFR-patch.exe

Once on the mega site right-click and download the patch you need.
Download page contains:
WoW-1.9.0-to-1.9.1-deDE-patch.exe WoW-1.9.0-to-1.9.1-frFR-patch.exe WoW-1.9.0.4937-to-1.9.1.4983-enGB-patch.exe WoW-1.9.0.4937-to-1.9.1.4983-enUS-patch.exe

Once on the mega site right-click and download the patch you need.
Download page contains:
WoW-1.9.1-to-1.9.2-deDE-patch.exe WoW-1.9.1-to-1.9.2-frFR-patch.exe WoW-1.9.1.4983-to-1.9.2.4996-enUS-patch.exe WoW-1.9.1.4983-to-1.9.2.4996-enGB-patch.exe

Once on the mega site right-click and download the patch you need.
Download page contains:
WoW-1.9.2-to-1.9.3-deDE-patch.exe WoW-1.9.2-to-1.9.3-frFR-patch.exe WoW-1.9.2.4996-to-1.9.3.5059-enGB-patch.exe WoW-1.9.2.4996-to-1.9.3.5059-enUS-patch.exe

Once on the mega site right-click and download the patch you need.
Download page contains:
WoW-1.9.3-to-1.9.4-deDE-patch.exe WoW-1.9.3-to-1.9.4-frFR-patch.exe WoW-1.9.3.5059-to-1.9.4.5086-enGB-patch.exe WoW-1.9.3.5059-to-1.9.4.5086-enUS-patch.exe

Once on the mega site right-click and download the patch you need.
Download page contains:
WoW-1.9.4-to-1.10.0-deDE-patch.exe WoW-1.9.4-to-1.10.0-frFR-patch.exe WoW-1.9.4.5086-to-1.10.0.5195-enGB-patch.exe WoW-1.9.4.5086-to-1.10.0.5195-enUS-patch.exe

Once on the mega site right-click and download the patch you need.
Download page contains:
WoW-1.10.0-deDE-patch.exe WoW-1.10.0-frFR-patch.exe WoW-1.10.0.5195-enGB-patch.exe WoW-1.10.0.5195-enUS-patch.exe

Once on the mega site right-click and download the patch you need.
Download page contains:
WoW-1.11.0-deDE-patch.exe WoW-1.11.0-frFR-patch.exe WoW-1.11.0.5428-enGB-patch.exe WoW-1.11.0.5428-enUS-patch.exe

These patches are for the Mac OSX client.
Once on the mega site right-click and download the patch you need.
Download page contains:
WoW-1.12.0-deDE-patch.zip WoW-1.12.0-enGB-patch.zip WoW-1.12.0.5595-to-1.12.1.5875-enGB-patch.zip WoW-1.12.0-enUS-patch.zip WoW-1.12.0.5595-to-1.12.1.5875-enUS-patch.zip WoW-1.12.0-frFR-patch.zip

Before the Storm - 1.12.x to 2.0.1
Once on the mega site just right-click and download the patches you need
This patch allows you to upgrade from Classic to The Burning Crusade, useful if you dont have expansion disks.
deDE
WoW-Before-the-Storm-deDE-patch.zip
enGB
WoW-Before-the-Storm-enGB-patch.zip
enUS
WoW-Before-the-Storm-enUS-patch.zip
frFR
WoW-Before-the-Storm-frFR-patch.zip
Important Notes (Please read and understand before downloading)
With this patch you can patch Classic into The Burning Crusade. However, Please note that if you have a Burning Crusade install disk you should use it after applying this patch to add The Burning Crusade content to your client, then patch as normal.
If you do not use an install disk / ISO and continue to patch as normal, you will be able to access a Mangos Burning Crusade server, BUT you will not have access to Burning Crusade content such as Outlands, nor will you be able to level past 60.
Blizzard had 2 versions of clients during Burning Crusade and Wrath of the Lich King. One was TBC but classic only and the other was full Burning Crusade.
If you do not have an install disk you may search the site for links to torrents or contact MadMax who may be able to direct you.

Patches 2.0.x to 2.4.2
Once on the mega site just right-click and download the patches you need
Contains:
WoW-2.4.2-frFR-patch.exe WoW-2.4.2-enGB-patch.exe WoW-2.4.2-deDE-patch.exe WoW-2.4.2-ruRU-patch.exe

2.4.0  Fury of the Sunwell
Patches 2.0.x to 2.4.0
Once on the mega site just right-click and download the patches you need
Contains:
WoW-2.4.0-deDE-patch.exe WoW-2.4.0-enGB-patch.exe WoW-2.4.0-enUS-patch.exe WoW-2.4.0-esES-patch.exe WoW-2.4.0-frFR-patch.exe WoW-2.4.0-koKR-patch.exe WoW-2.4.0-zhCN-patch.exe WoW-2.4.0-zhTW-patch.exe

2.0.3  The Burning Crusade
Once on the mega site just right-click and download the patches you need
Contains:
WoW-2.0.3-engb-patch.exe WoW-2.0.3-enUS-patch.exe WoW-2.0.3-esES-patch.exe WoW-2.0.3-frFR-patch.exe

2.4.1
Patch Notes
Patches 2.4.0 to 2.4.1
Once on the mega site just right-click and download the patches you need
Contains:
WoW-2.4.0.8089-to-2.4.1.8125-deDE-patch.exe WoW-2.4.0.8089-to-2.4.1.8125-enGB-patch.exe WoW-2.4.0.8089-to-2.4.1.8125-enUS-patch.exe WoW-2.4.0.8089-to-2.4.1.8125-esES-patch.exe WoW-2.4.0.8089-to-2.4.1.8125-frFR-patch.exe WoW-2.4.0.8089-to-2.4.1.8125-koKR-patch.exe WoW-2.4.0.8089-to-2.4.1.8125-zhCN-patch.exe WoW-2.4.0.8089-to-2.4.1.8125-zhTW-patch.exe

2.4.2
Patch Notes
Patches 2.4.1 to 2.4.2
Once on the mega site just right-click and download the patches you need
Contains:
WoW-2.4.1.8125-to-2.4.2.8278-deDE-patch.exe WoW-2.4.1.8125-to-2.4.2.8278-enGB-patch.exe WoW-2.4.1.8125-to-2.4.2.8278-enUS-patch.exe WoW-2.4.1.8125-to-2.4.2.8278-esES-patch.exe WoW-2.4.1.8125-to-2.4.2.8278-esMX-patch.exe WoW-2.4.1.8125-to-2.4.2.8278-frFR-patch.exe WoW-2.4.1.8125-to-2.4.2.8278-koKR-patch.exe WoW-2.4.1.8125-to-2.4.2.8278-zhCN-patch.exe WoW-2.4.1.8125-to-2.4.2.8278-zhTW-patch.exe

2.0.4
Patch Notes
Patches 2.0.3 to 2.0.4
Once on the mega site just right-click and download the patches you need
Contains:
WoW-2.0.3.6299-to-2.0.4.6314-enUS-patch.zip

2.0.5
Patch Notes
Patches 2.0.3 to 2.0.5
Once on the mega site just right-click and download the patches you need
Contains:
WoW-2.0.3.6299-to-2.0.5.6320-deDE-patch.exe WoW-2.0.3.6299-to-2.0.5.6320-enGB-patch.exe WoW-2.0.3.6299-to-2.0.5.6320-enUS-patch.exe WoW-2.0.3.6299-to-2.0.5.6320-esES-patch.exe WoW-2.0.3.6299-to-2.0.5.6320-frFR-patch.exe

2.0.10
Patch Notes
Patches 2.0.3 to 2.0.10
Once on the mega site just right-click and download the patches you need
Contains:
WoW-2.0.3.6299-to-2.0.10.6448-deDE-patch.exe WoW-2.0.3.6299-to-2.0.10.6448-enGB-patch.exe WoW-2.0.3.6299-to-2.0.10.6448-enUS-patch.exe WoW-2.0.3.6299-to-2.0.10.6448-esES-patch.exe WoW-2.0.3.6299-to-2.0.10.6448-frFR-patch.exe WoW-2.0.3.6299-to-2.0.10.6448-koKR-patch.exe

2.0.12
Patch Notes
Patches 2.0.3 to 2.0.12
Once on the mega site just right-click and download the patches you need
Contains:
WoW-2.0.3.6299-to-2.0.12.6546-deDE-patch.exe WoW-2.0.3.6299-to-2.0.12.6546-enGB-patch.exe WoW-2.0.3.6299-to-2.0.12.6546-enUS-patch.exe WoW-2.0.3.6299-to-2.0.12.6546-esES-patch.exe WoW-2.0.3.6299-to-2.0.12.6546-frFR-patch.exe WoW-2.0.3.6299-to-2.0.12.6546-koKR-patch.exe

2.0.7
Patch Notes
Patches 2.0.3 to 2.0.7
Once on the mega site just right-click and download the patches you need
Contains:
WoW-2.0.3.6299-to-2.0.7.6383-deDEpatch.exe WoW-2.0.3.6299-to-2.0.7.6383-enGB-patch.exe WoW-2.0.3.6299-to-2.0.7.6383-enUS-patch.exe WoW-2.0.3.6299-to-2.0.7.6383-esES-patch.exe WoW-2.0.3.6299-to-2.0.7.6383-frFR-patch.exe WoW-2.0.3.6299-to-2.0.7.6383-koKR-patch.exe

2.0.5
Patch Notes
Patches 2.0.4 to 2.0.5
Once on the mega site just right-click and download the patches you need
Contains:
WoW-2.0.4.6314-to-2.0.5.6320-enUS-patch.exe Missing: enGB, esES, frFR, koKR, deDE

2.0.6
Patch Notes
Patches 2.0.5 to 2.0.6
Once on the mega site just right-click and download the patches you need
Contains:
WoW-2.0.5.6320-to-2.0.6.6337-deDE-patch.exe WoW-2.0.5.6320-to-2.0.6.6337-enGB-patch.exe WoW-2.0.5.6320-to-2.0.6.6337-enUS-patch.exe WoW-2.0.5.6320-to-2.0.6.6337-esES-patch.exe WoW-2.0.5.6320-to-2.0.6.6337-frFR-patch.exe