International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, Volume XXXIX-B4, 2012 
XXII ISPRS Congress, 25 August — 01 September 2012, Melbourne, Australia 
tight integration with other web contents and web search 
capabilities, they suffer from a number of weaknesses, mainly 
the limited or lacking possibilities of integrating own high- 
quality and up-to-date geospatial base data and of extending the 
(core) functionality of the virtual globe. As it is shown in this 
paper, the OpenWebGlobe processing framework and the 
viewer SDK which is entirely based on HTMLS and WebGL 
offer a highly performant, extensible and rapidly evolving 
alternative to commercial virtual globes. Ongoing and future 
work includes aspects such as the integration of new content 
types (e.g. massive point cloud streaming, 3d model streaming), 
the implementation of new navigation modes or the 
development of web-based geospatial games. 
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