Talent tree data: WoWSims classic, tbc and wotlk (MIT).
https://github.com/wowsims/classic
https://github.com/wowsims/tbc
https://github.com/wowsims/wotlk
French talent names and descriptions: Wowhead spell data. Icons: Blizzard Entertainment, via wow.zamimg.com.
Custom calculator interface: L’Assemblée des Défias.