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  Google Calendar Windows Client 8 Dec 14

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  FET - Free Timetabling Software 31 Dec 14

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  Timesheet Xpress 18 Feb 15

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  Swift To-Do List 6 Feb 16

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  StudyMinder Homework System 9 Dec 14

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  CodeTwo NetCalendars (32-bit) 27 Oct 18

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  Lightning 27 Apr 18

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  Efficient Reminder Network 14 Aug 18