The Outliner 2.0 is a fast and easy to use scene management tool. It has a wide range of features, including selecting, hiding, freezing, linking and grouping objects in the "Hierarchy Mode". In the "Layer Mode" you can organize your scene by dragging&dropping objects from one layer to the other. What's more, the Outliner offers support for nested layers, to manage scenes more efficiently. The interface is nimble enough to keep it open constantly.
Hierarchy Mode using dark UI scheme, and maya icons
Layer Mode (including nested layers)
Compared to the previous version (1.6.1), there are many improvements. Most notable among them are: hugely increased performance, improved stability, nested layer support and many small tweaks to improve the ease of use. For a list of all changes, click here