Open Source C Calendar Software

Osmo is a handy personal organizer, which includes calendar, tasks manager, address book and notes modules. It was designed to be a small, easy to use and good looking PIM tool to help to manage personal information.

!!We've Moved to GitHub at http://github.com/libical !!The code here on SourceForge is frozen !!Please follow us at http://libical.github.io/libical The Free Association project maintains libical, an open source reference implementation of the icalendar data type and serialization format. libical is used in dozens of calendaring and scheduling products.

GReortes 3.5 is a Greek personal calendar and religious holidays application for Linux 64bit OSs written in C ! Tested successfully on many popular distributions ( Ubuntu , Debian, MX Linux, Arch, Linux Mint , EndeavourOs, Pop-OS, Zorin, Fedora, KDE Neon , Kubuntu etc.) Allows the user to keep a personal diary for which data can be searched anytime. Code : https://github.com/fanisatt/EORTOLOGIO-GR (See latest version 3.5) Details in Greek ....

A client library adding support for the CalDAV protocol (rfc4791). The intension is to have a library which fully implements the protocol so that anybody with relative ease can add CalDAV support to there application.

BirthdayHint - программа для Windows, напоминалка о днях рождениях, именинах и любых других датах. Когда день рождения у тёти? Сколько лет исполнится бабушке? Ой, вчера у Васи была днюха, забыл поздравить! Знакомые ситуации? Тогда вам поможет программа BirthdayHint! Установите её, и она будет висеть в трее и напоминать о ближайших событиях.

This application can create any year calendar after the year 1759. Special feature: => Calendar creation in mass.

Tpl makes it easy to serialize your C data using just a handful of API functions. The data is stored in its native binary form for maximum efficiency. C, Perl and XML supported. Data is portable across CPU types and OS's from Unix to Mac to Windows.

Citadel is a unique fusion of groupware, cms, bbs, and more...

Web and cellphone mobile application to assist persons, groups and companies assign a meeting at the suitable place and time according to their location and time sheet and shared resource planning. Includes goods and service public catalog, shared by people to coordinate their efforts. Affordable for use anywhere and can installed at the company's web site or cellphone thanks to low technical requirements. Implemented in pure C. Designed as SOAP service to easy integration with other systems.

Various software projects related to running the student caffeteria at the Computer Science Department, University of Copenhagen.

Plugins to synchronize Evolution calendar with the online Google calendar and BlackBerry device calendar.

EMAS is a web-based system written in ANSI C which provides the user a great way to manage your events.

GAIM Tracker is a plugin which integrates Mozilla Sunbird calendar with GAIM and automatically updates your status based on calendar entries and agenda items.

http://memjog.sourceforge memjog -NBR_DAYS Print events from an event file which occur in the next NBR_DAYS. Lines in the file are of the form: mm/yy/dd text describing the event. The output prepends the day of the week, e.g.: THU 12/25/08 Christmas Day

MythiCal is intended to be the ultimate calendaring solution for F/OSS users. It features a client/server architecture with multiple storage backends for existing calendar providers, and an Apache module to provide a fast, scalable iCal solution.

A NCurses based calendering system. Support for all the features in the popular calendering programs, including to-do support; project support; and time clock support. Designed to be portable across platforms.

Pecaldays is a powerfull and portable calendar utility for Linux 64bit OSs. ! It is written in C language. Actually , I made it to support my PEDABA (Data Base) Linux application but , I think it will be usefull as a standalone utility too. You can search for any date you want from 01/01/001 a.C to 31/12/2500 A.C to find the corresponding day. You can also add or subtract number of days to a specific date. It is also possible to extend the Julian calendar (for information only about the corresponding day) beyond 15 October 1582 (official opening of the Gregorian calendar) because, many countries made the transition to the new calendar several years later.

Enter any date after the year 1759 and find out what day of the week corresponding to that date! You still think you need a calendar? With this application, you have access to thousands calendars, one for each calendar year! Still think you need the paper calendar or calendar on your operating system? You can for example knowing the day of the week corresponding to 14/12/3000, It's a Sunday! Use "find week days in mass" feature! It's the easily way of know faster the day of week that corresponds a certain date.

It is calendar program which allows you to enter the month and year in number and displays the monthly calendar .

collection of small useful utilities

Extended version of the ccal-function in linux, that also shows time and other cool stuff! Originally intended as a school project.

Plans duties for 1 of ~30 doctors, 2 duties a day, calendar-based and person-based schedules & statistics. Berechnet Dienstpläne für 1 aus ~30 Ärzten, 2 Schichten / Tag, Kalenderpläne, persönliche Pläne und Statistik.

This program displays (in Greek language) the "name day" that is celebrated based on the Greek Orthodox Calendar. It also displays events from a personal and international days database and can calculate the Orthodox Easter and the feast days of a year

A reminder window for Evolution that behaves more like the reminder window that most office workers are probably used to. Let reminders accumulate, dismiss individual reminders, and even retain them across opening/closing the program.