KOffice is a free and open source office suite and graphics suite by KDE for Unix-like systems and Windows. KOffice includes a word processor, a spreadsheet, a presentation program, and several other elements that fluctuated over the course of the development of KOffice.

KOffice includes several different applications, including productivity, creativity, management, and supporting programs.

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The computer mouse as we know it today was invented and developed by Douglas Engelbart, with the assistance of Bill English, during the 1960’s and was patented on November 17, 1970