The easySkyExplorer has been developed for amateur astronomers and enthusiasts of astronomy. easySkyExplorer provides you with the most important information and best observation time about a desired sky object in the northern and southern hemisphere at a glance and with a click of the mouse. A graphical layout of each of the 88 constellations in the northern and southern hemisphere gives you a quick overview of all the associated sky objects. The most attractive ones are illustrated with small pictures. easySkyExplorer provides also a basic astronomical knowledge base, that explains the specifications of a sky object, like spectral classes of stars, Hertzsprung-Russel diagram, classification of galaxies, distance ladder, magnitudes, etc. Conversion calculations of astronomical units and formulas are also supported. easySkyExplorer is based on MS-Excel. Therefore, It allows you to find, to organize, to sort the data of constellations and appropriate sky objects, supported by specific macro-commands and Visual Basic scripts. One goal was also an ease of use approach. Anyone with basic knowledge of MS Excel will quickly become familiar with this tool. easySkyExplorer includes actually more than: 2’600 sky objects. Each sky object has a local- or cloud-link to the corresponding images, abstracts and videos. For further detailed information, please refer to the easySkyExplorer User Manual The offered free of charge, non-commercial version of easySkyExplorer on this website is only available as : Cloud version, called: easySkyExplorer_cloud In easySkyExplorer_cloud all sky objects data are stored on the Google Drive cloud. All internet hyperlinks to pop-up images, documents and videos are working on Apple iOS devices like iPad and iPhone as well as on MacOS-Computers/Macbooks; Windows 10 /11 Desktop Computers/Notebooks