Best Open Source Calendar Software 2026

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Browse free open source Calendar software and projects below. Use the toggles on the left to filter open source Calendar software by OS, license, language, programming language, and project status.

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1

Android Birthday Reminder

This android app reminds you about upcoming birthdays. You can read and write the date of birth of all contacts in your address book. This project moved to GitHub: https://github.com/sealor/BirthdayReminder

1 Review

Downloads: 0 This Week

Last Update: 2017-10-14
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2

Calendar Outlook

A calendar widget for Nokia N97, N97 mini, C6 and N8 that behaves like the "today view" from MS Outlook to provide a quick overview of the next upcoming events. On homescreen it shows 4 lines and if there are more events then it will be scrolling.

2 Reviews

Downloads: 0 This Week

Last Update: 2016-07-26
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3

ComingNext

ComingNext is a calendar homescreen widget for the Symbian smartphones

ComingNext is a calendar homescreen widget for the Symbian S60v5, Symbian^3, Symbian Anna and Symbian Belle smartphones. It sports a triple panel mode where each panel can display 4 upcoming events directly on your homescreen. The widget can easily be customized to your needs.

20 Reviews

Downloads: 0 This Week

Last Update: 2012-12-11
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4

Smapp

Smapp (SmartAppointmentPreview) is a C# application for Pocket PCs which shows in a easy way the current and future appointments.

Downloads: 0 This Week

Last Update: 2016-05-21
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