Lightsprint API consists of following libraries:

LIGHTSPRINT CORE - is a set of offline and realtime GI solvers that can be integrated with arbitrary graphics API or game engine (includes also fast ray-scene intersections)
LIGHTSPRINT GL - is such an integration with OpenGL, together with modern extensible plugins based renderer
LIGHTSPRINT IO - provides support for 95+ fileformats
LIGHTSPRINT ED - is a realtime 3d scene visualizer and editor, with nearly all features of other Lightsprint libraries integrated

structured into core layer and extensions:

See Samples for more details on samples.