The 4.4.41 version of SPOT is available as a free download on our website. The actual developer of the free program is Daylighting Innovations LLC. The program belongs to Office Tools.
From the developer:
SPOT is intended to assist a designer in quantifying the existing or intended electric lighting. The software was developed with classroom daylighting in mind, but can be used for all types of spaces. SPOT™ handles top and side daylight sources and can model any electric lighting source. The software uses a Microsoft® Excel platform with a RADIANCE engine and is available at no cost.
You may want to check out more software, such as Cool Spot 2 Spot Goes To Hollywood, Hotfix - Autodesk Revit 2013 - Spot Elevation or Ulead Drop Spot, which might be similar to SPOT.
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