A massive pack of 300 seamless (tileable in all directions), color corrected 2048x2048 texture images. Designed for painting and sculpting in Blender but could be used with any 3D software.
Zero Brush has been featured on Blendernation.com, and dozens of other websites. Zero Brush transforms Blender into a powerhouse production studio taking the grunt work out of painting, sculpting, baking and more. Zero Brush Manual
Alchemy is much more than a material collection for Blender (though it ships with 75 original Cycles materials). Alchemy is a full featured material library addon that gives you the ability to create, save and paint with particle, effect materials (like fire and smoke), and more. Alchemy User Manual
DND ENV lets you drag any image type from Blender's file browser into a 3D View window and automatically generate a 3D environment. This addon supports SIBL, dual map loading and includes a simple library button for quick access to your environments and other assets.
Sensei Format is loaded with hundreds of tweaks to simplify and enhance Blender. It also uses custom hotkeys, workspaces and tools. Checkout the "Resources" button above to view the manual, download hotkeys and for more information.