sporemodapi
ModAPI launcher (for some mod installation):https://sporemodder.wordpress.com/spore-modapi/
Otherwise, just copy the .package into spore's data folder (or EP1's data folder if you have galactic adventures)

Creature creation:

>900 or so new parts, new textures, new sounds, a bunch of optimal stuff to activate your Darkspore memories
http://davoonline.com/sporemodder/rob55rod/DI_9r/DI9r.html

>Full hex color selection (as opposed to the 700ish by default)
https://sporemodder.wordpress.com/infinite-colors-enhanced-color-picker/

sporemodapi How to dowload it? sporemodapi
Gameplay:

>PlatinumSpore (gameplay overhaul)
Creator's thread: http://steamcommunity.com/app/24720/discussions/0/133260492061153044/
Somewhat outdated feature list: http://sporegaming.ucoz.com/load/spore_mods/spore_mods/platinumspore/2-1-0-10
Download: https://mega.nz/#F!jBQxjAjY!ZHmq64-tgFvrwy1VV1liyQ
sporemodapi