There is a wealth of useful applications, tutorials and Mesh Models available to help express your creativity in Opensim virtual worlds. Most of it is free and there are many online Tutorials and blogs to help get you started. Here I list some that I have used and which I recommend...


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DAZ Free 3D Software | 3D Animation Software | Poser 3D Models

Unleash the Artist Within Everything you need to start creating your own stunning artwork is waiting for you right here. Use Bryce for terrains and Hexagon for modeling



Free3D has a range of royalty free mesh models as well as premium models. Please check the licence terms and comply. See
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Phaze Demesnes
1001+ free LSL scripts useful in Second Life and Opensim grids. Creative Commons License but please respect terms given in script headers and the terms of use currently set out on the web site.

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Great set of video Blender Tutorials from long-time Second Lifer, Opensimer & virtual worlds enthusiast, Chic Aeon
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Leveller for OpenSimulator (part 1): Importing into Leveller.
Leveller for OpenSimulator (part 2): Exporting to Opensim. 
Leveller for OpenSimulator (part 3): Making Terrains from existing Maps.
Gimp is the free graphics application used by many Opensim residents. Tutorials making clothes using Gimp...
Seamless Textures 3: YouTube video; How to Create a Seamless Texture using Gimp.
Sculptypaint is a low polygon 3D creation tool original written for creating sculpts; 3D low polygon models for SecondLife. But currently it can also export to .obj files that can be read in Blender, wings3D etc.
Starlight offers some great skins for free upload to Opensim grids.
Creative Commons Search offers a great search engine that can seek out copyright free images and photos for use in your own work.
Poser is a 3D rendering software package for the posing, animating and rendering of 3D polymesh human and animal figures. It comes on a free trial basis but there is plenty of free content at sites like ShareCG
bvhacker is the free bvh file editing tool.

Tentacolor is a tutorial on how to make animations in blender. 


Tutorials and tips for Second Life and OpenSim. Offers help with creating and uploading avatar skins. Includes help with clothing, hair and texturing as well as tutorials for installing and running Opensim.
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Blender is the free open source 3D content creation suite, model - shade - animate - render - composite - interactive 3d. Blender was the first to export SL Sculpties.
QAvimator is a free bvh animation editor, created for use in the 3D metaverse. Make your own animations.
Sim on a Stick: Download SoaS from Ener Hax single-user preconfigured OpenSim 0.7.4 running with its own isolated instances of MySQL, Apache, and PHP for Windows
Fleep: Free Scripts for SL & OS
Tutorial for Blender from soror Nishi
Fax on Blender Mesh Tutorial and blog for Blender
MESH IMPORT Opensim Creations explains how to import Mesh into Opensim.

Optimization Tutorial: Creating Your Own LOD Models!     
courtesy The Digital Pasture
A lot of SL users are worried that if Linden Lab ever attempted to reign in unoptimized content, it might push content creators away. So beginning today I want to start showing  you just how easy optimization is. The first thing we're going to look at is creating your own LOD models using this milk can model I created.  Continue reading @ The Digital Pasture

Wings3D Free open source app to build sculpties. Not too hard to learn
Opensim Tutorials Lots of helpful tutorials on installing and upgrading.
WhiteCore-Sim is the continuation of Aurora Sim and here are a bunch of tutorials to set it up and configure your grid & regions, including variable sized regions. 
How to put your own face on your avatar
If you plan to use your skin on multiple grids, it’s good to start out with a base that’s fully in the public domain. That way, you don’t have to worry about accidentally violating license terms...

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Posted Aug 26th 2014
Maria's World @ Hypergrid Business

Universal Campus OAR  downloadable infrastructure for organizing and deploying collaborative meetings, such as classes, research group meetings, and conferences in a virtual 3D world. The Universal Campus infrastructure consists of the virtual world and the avatars.
Tutorial Hoarder's Dump Collection of digital art tutorials hoarded over time.
JFXR~ Free online tool to create sound effects.
JFXR @ GitHub Open source files for JFXR~
Machinima  Basic video tutorials from Erthro Asimov. 
Opensim & Mesh ~ Understanding the Misunderstandings.
Opensim Server Commands ~ Lists all the commands to work with you regions server side.
Interactive Fiction ~ Introduction to Interactive Fiction
OSgrid Free LSL ~ Scripts Library is long list including OS NPC scripts.
Mini NPC Tutorial ~ How to create an Opensim NPC (Non Playing Character).
Blender Basics: Making basic mesh prims. Tutorial Series by Ozwell Wayfarer.
Free Particles Generator  ~ LSL Particles System script generator.
The Avatars Workbench ~ add some nice to have features to your mesh avatar.
Machinimatrix Avastar ~ Blender Addon for Second Life Mesh Creators and Animators.
Clothes Previewer ~  And Free, Open Source Skins. From Outworldz.
Peregrine Salon ~ Tool to convert images to animated gif's for SL and Opensim worlds.