The Ray Rig is a free Maya rig useful for dialogue scenes and performance offered by CGTarian
Ray Rig (FREE)
Pink Panther Rig (FREE)
The Pink Panther Rig is a free character rig for Maya based on the popular character ‘Pink Panther’
Ultimate Rigs (FREE)
The Ultimate Rigs are great free Maya rigs for practicing body mechanics
Sketchfab
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
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 (FREE)
Daz 3D – A 3D morphing, posing, animation and rendering suite, normally retailing at $249 but is now free to download
Animschool Picker
Animschool Picker – A great free control picker for Maya by AnimSchool
Malcolm 2.0 Rig (FREE)
Malcolm 2.0 Rig – A great free rig from AnimSchool
Animation Mentor Rigs (FREE)
Animation Mentor Rigs – Two free rigs from Animation Mentor when
Animator's Resource Kit 