Update:
Added new link for PMD Editer
Added preview screenshot for PMD Editer
Added preview screenshot for VMD View

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Here are some free programs that should help everyone improve their artwork. You may link others to this journal post if you'd like to spread the word.

I have used some programs for over a year. LOL I never thought to use them to improve my art until recently. Maybe I'm just lazy...

Links to model data will be provided below at the bottom of this post.

Japanese Programs in English

Miku Miku Dance
Website: [link] 3MB (8MB when extracted)
3D model file: .pmd
Description: It's a 3D poser used to make promotional videos for Vocaloid.
Preview Screenshot: [link]

Celsview
Website: [link] 2MB (13MB when extracted)
3D model file: .mqo
Description: This program will help you with cell shading. You can manipulate the light source and color on 3D models.
Preview screenshot: [link]

Metasequoia
Website: [link] 4MB (10MB when extracted)
3D model file: .mqo (supports others)
Description: 3D modeling program

Hexagreat
Website to download [link] 800KB (2MB)
3D model file: .rok
Description: 2D to 3D modeler


Programs in Japanese

Mikoto
Website: [link] 2MB (4MB extracted)
3D model file: .mqo
Description: 3D poser much like MMD, but movment of bones is controled differently.
Preview screenshot: [link]

PMD Editor
Website: [link]
tutorial for VMDView: [link]
Description: It's soo obvious what it does LOL
Preview screenshot PMD Editer: [link]
Preview Screenshot for VMD View: [link]
Modified Len model: [link]

MM Viewer
Website: [link] 500KB extracted
Description: mqo model viewer


There are more programs that I'm not going to bother linking to.
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I'll link to some sites to get models. I'm not going to link to big wiki sites. Most people are too lazy to navigate them. -_-... I'm probably too patient. LOL

[link] .pmd
[link] .pmd
[link] .pmd and .mqo
[link] .pmd and .mqo

In MMD put extracted model folders in UserFile > Model folder

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Oekaki Board
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mid to advanced level oekaki