Sketchfab allows you to upload full 3D scenes for others to view directly in their browser. They are the world’s largest platform to publish, share and discover 3D content online and in VR.
Posemaniacs is good free resource for searching for specific poses at various angles. It has 1000s of poses displayed by male and female 3D models.
Daz 3D – A 3D morphing, posing, animation and rendering suite, normally retailing at $249 but is now free to download
Animschool Picker – A great free control picker for Maya by AnimSchool
Malcolm 2.0 Rig – A great free rig from AnimSchool
Animation Mentor Rigs – Two free rigs from Animation Mentor when
Dota 2 Rigs – A large selection of free Dota 2 rigs on the Steam Workshop
Truong Rigs – A massive selection of free and paid rigs all made by Truong
A workflow breakdown by Adam Turnbull of how he morphed between three different rigs