Blender: Blender is a free and open source 3d computer graphic software.
It consist of many powerful features like 3d modeling, texturing, lighting, rigging, skinning, fluid, smoke, particle, sulpting and animating it event has camera tracking, video editing and compositing with powerful node editor were you dont have to worry about after effect.
It also has a built-in game engine.
If you are a new beginner and want to try out a 3d software this is probably the best for you cause its an open-source and is available for free. You can get it free from Blender official site.www.blender.org
Sculptris: Sculptris is a sculpting software similar to Zbrush where you can pull, push, pinch and twist virtually clay. It is developed by the team Pixologic (creator of Zbrush). If you want to learn Zbrush you better first try sculptris which is more easy to learn and friendly user interface. You can even import your .obj file to give further delailing.
You can get it free from Pixologic official site www.pixologic.com
12 Free Substance Materials Package
By Silvio Valinhos
A package of materials for Substance Painter and Substance Designer, using the Metallic PBR workflow (Base Color, Roughness, Height, Metallic), in the sbsar format.
The material preview was made in Marmoset Toolbag by assigning the textures generated in Substance Painter.
Inkscape: Inkscape is a professional vector graphics editor for Windows, Mac OS X and Linux. It's free and open source. Vector graphic in simple way meaning the graphic can be scale to any extent without losing any detail. It is best for creating logo design, web button, Icon, web banner and all types of card.
You can get it free from Inkscape official site... www.inkscape.org
Gimp - GNU image manipulation program (GIMP) is a photo editing software where you can edit your photo layer wise. GIMP is a cross-platform image editor available for GNU/Linux, OS X, Windows and more operating systems.
It can also be use as a siple paint program. It has lots of features to explore.
You can get it free from GIMP official site. www.gimp.org
XNormal: Is a simple tool use to generate Normal map / ambient occlusion / displacement maps.
It can also project the texture of the highpoly model into the lowpoly mesh ( complete texture transfer, even with different topologies ).
In 3D computer graphics, normal mapping, or "Dot3 bump mapping", is a technique used for faking the lighting of bumps and dents – an implementation of bump mapping. It is used to add details without using more polygons.
A common use of this technique is to greatly enhance the appearance and details of a low polygon model by generating a normal map from a high polygon model or height map.You can get it free from Xnormal official site www.xnormal.net
COLOR VIBRANCE Plug-in
Color Vibrance Plug-in for After Effect: Intense bright colorization can be tricky so Video Copilot created a plug-in that makes it easy to achieve HOT colors instantly. Plus it’s FREE!
We even added some helpful matte tools so you can generate alpha channels from stock footage like SHOCKWAVE and give you more compositing control. www.videocopilot.net
Add Hot Colorization with ease
Create Alpha Channels (unmultiply)
Works on Pre-Matted Clips
Eliminate the faded colors when using mask feathering