most (not all, some contributions are QTVR-only due to historical reasons)
Javascript + HTML5 / WebGL
many, but depends on photographer's choice of file upload (newer event = more likely to work) and your device's capabilities. You may experience slow playback, distorted images or unexpected browser quitting if there is only limited memory/GPU power available.
Fitz-Faller-fountain, median palace-garden, the park that crosses downtown Stuttgart. Built 1961 on the occasion of the national gardens exhibition. The water tables at different heights and the basins underneath give an impression of the dynamic and the beauty water is unfolding. There are three circular basins, one with low, one with medium and one with high tables that reach nearly 4 meters height. Under those highest tables the cubic panorama was shot.
Equipment: Canon EOS 10D with Sigma 8 mm Fisheye on Manfrotto 303 panhead on Slik tripod - placed directly in the fountain - covered camera with plastic bag, cause me and the tripod got completely wet! ;-) ... Thanks to Roberto Gomez Torres who again did a great PanoTools stitching job for me!