Animators Resource is a similar website to this one but focuses more on specific posts and videos rather than linking to other websites.
Animators Resource
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.
Quickposes
Quickposes is a tool for art students, illustrators or anyone who wants to focus on improving their drawing skills. By practicing gesture drawing you will not only get better at recognizing certain aspects of poses, but you will also build a visual library of characters and models.
Living Lines Library
Living Lines Library is an amazing resource full of pencil tests, drawings, documentaries and more from the animation legends!
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.
Wowhead
Wowhead is a site that allows you to view character animations from World of Warcraft. Another great source for game animation.
Zweifuss
Zweifuss is a website that displays the sprite animations for Street Fighter 3 – Third Strike. Great for reference material and for just admiring the lovely sprite animations.
On Animation
On Animation is a website filled with animation analysis, behind the scenes, podcasts and more. Check it out!
Animator's Resource Kit 