Working Gatherer and GathererDB for WotLK 3.3.5
My harddrive crashed and sadly I didn't have my wow folder backed up. That set me on a journey to rebuild my collection of addons. Some of those addons have since become harder to get due to dead links. Getting a working Gatherer database was one of the last things I struggled with, but I did find a working site. Very frustratingly a lot of the links on this forum send you to a wowinterface page for GathererDB, but that is for patch 4.0.1 and the wowinterface page doesn't make that clear. So you download it and it doesn't work, even though nearly everything you can find points you there.
Gatherer 3.1.16
GathererDB WoWHead 2009.09.12
https://wowgaming.github.io/addon-archive/
This contains not just Gatherer and GathererDB, but many other addons for WotLK 3.3.5.