If you have ever had to paint weights in Maya you know how big of a waste of time it can be. Up until recently I used the native tools (paint weights) inside of Maya for this task, then I discovered ngSkinTools. I was absolutely amazed at how fast the workflow is as well as forgiving. Being able to paint your weights in layers like photoshop then mask them out or adjust the overall strength of them while completely avoiding the component editor is nothing short of amazing. If you have to weight a rig on an upcoming project, I cant recommend this tool enough.
For a really good intro and walk through on some of the main features of the tool, head over to Rigging Dojo’s Rigging Dojo AIR subscription excerpt: Easy skinning page to see the tool in action.