bimangle.com/Bimangle.ForgeEngine.Revit2015v6.3.7

ForgeEngine can export your model to other formats, such as Autodesk Forge Viewer SVF/F2D, glTF/glb and Cesium 3D Tiles, etc. No need to rely on other online services, can be run offline. this package is available for Autodesk Revit 2015.