N++ is a building energy modeling interface from ExpertApp based on the
latest version of the EnergyPlus whole-building energy simulation engine
(V8.1).
N++ is built on the principle that building energy modeling should be
intuitive, fast, flexible, and most importantly visual, with a CAD-like
environment that fits in the conventional design process.
N++ allows architects, engineers and energy professionals develop and
manage building energy models in a timely fashion, to analyze multiple
design scenarios through either desktop or cloud-based simulation, and to
inform project decisions.

For more information, please visit: http://www.expertapp.com/npp.php

The main features of N++ are:

-Model creation in CAD-like environment
-3D orbit view and editing of model geometry
-Drag and drop of the main Energy Plus objects
-Import of raster and dxf drawings for fast zone tracing
-EnergyPlus model import and export
-Enhanced parametric analysis and optimization through jEPlus (
http://www.jeplus.org/wiki/doku.php) and GenOpt (
http://simulationresearch.lbl.gov/GO/)
-Parallel simulation on desktop computer, local network or cloud services
(currently via JESS server-
http://www.jeplus.org/wiki/doku.php?id=docs:jess_service)
-Case tagging of the objects that allows multiple model versions in the
project (Proposed design, LEED baseline, Code compliance ...)
-Lighting and electric equipment count
-Graphical representation of the simulation results
-SVG viewer for model diagrams
-Enhanced HTML report viewer

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Vladimir Bajic