[[WordStar]] for word processing, [[Multiplan]] and [[SuperCalc 2]] for editing spreadsheets, [[DBase II]] for making databases as well as more than 13 high level languages for research and development were typical personal business applications that were available for the CPC6128 under [[CP/M]]-80. However, a CP/M-80 application and its GUI as well, dealing with the personal or the family budget was missing (..?). <br>
'''COSMOS''' is a personal '''COS'''t '''MO'''nitoring '''S'''ystem written by [[KSL|KSL]] which runs under CP/M-80. It is a personal business application similar to the MSDOS-era PC applications and one of the most recent projects developed for CP/M-80. COSMOS runs under the [[Dobbertin]] 63 KB TPA version of [[CP/M|CP/M 2.2]] and is built upon the mouse based graphics user interface as pioneered by Xerox at Palo Alto and popularized by Apple with the Lisa and Macintosh computers. <br>