Browse free open source Calendar software and projects for Mac and Linux 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
    WebCalendar
    Project has moved to github: https://github.com/craigk5n/webcalendar WebCalendar is a PHP application used to maintain a calendar for a single user or an intranet group of users. It can also be configured as an event calendar.
    Downloads: 21 This Week
    Last Update:
    See Project
  • 2
    todoyu
    Features: web2.0 project- & task-management, timetracking, team organizing, resource management, calendar, interface for your clients and lots more! Content: see license.txt (file section).
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    Downloads: 4 This Week
    Last Update:
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  • 3
    e-Bridge Vehicle

    e-Bridge Vehicle

    Vehicle rental management for SME operators

    New Version coming soon. Designed as a simple reservation management system for SME vehicle rental agencies. Created as a test harness for our e-Bridge travel distribution product, but fully functional for use by operators, car, bike, bus rental agencies. e-Bridge Vehicle is e-Bridge ready, so it can be connected directly to your website via an online booking engine and directly to agents. Software is language independent. Register for e-Bridge http://www.e-bridge.co Demo TBA - being updated Please checkout our other projects e-Bridge Tour http://otatour.sourceforge.net/ e-Bridge Golf http://otagolf.sourceforge.net/ e-Bridge Hotel http://otahotel.sourceforge.net/
    Downloads: 4 This Week
    Last Update:
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  • 4
    SmartArranger is a general organizer that includes : A projects manager. A general to-do list for your tasks. A time table. It's designed to be simple to use, its intuitive interface provides clarity through all your information.
    Downloads: 1 This Week
    Last Update:
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  • 5
    Awal Php Tour Reservation n Portal is Php MySQL based open source tour reservation CMS system with Hotels listing and travel portal.
    Downloads: 0 This Week
    Last Update:
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  • 6
    Bumblebee Instrument Management System
    Equipment/instrumentation booking and usage accounting system. Designed primarily for use in academic laboratories where a number of users share a set of instruments (e.g. NMR machines, microscopes, fume hoods).
    Downloads: 0 This Week
    Last Update:
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  • 7
    CalendarTechnique is a feature rich customizable web calendaring and scheduling application with support for group/shared calendars. CalendarTechnique makes it easy to manage events, tasks and journal entries as well as import and export iCalendar files.
    Downloads: 0 This Week
    Last Update:
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  • 8
    DAViCal CalDAV & CardDAV Server
    The DAViCal CalDAV & CardDAV Server is a repository for calendar, todo, journal and vcard entries to be accessed via CalDAV clients such as Evolution, Lightning, Apple iCal or the iPhone. You need to download both DAViCal & the AWL library.
    Downloads: 0 This Week
    Last Update:
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  • 9
    DDay.iCal is an iCal (RFC 5545) class library for .NET 2.0 and above, Silverlight. It aims at being as RFC 5545 compliant as possible, while targeting compatibility with popular calendaring applications, like Apple iCal, Outlook 2007, etc.
    Downloads: 0 This Week
    Last Update:
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  • 10
    Datenator is a free event calendar written in PHP. Please check out Datenators homepage for full feature list, screenshots and an online demo.
    Downloads: 0 This Week
    Last Update:
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  • 11
    The Java Calendar Tools project will contain open source components for use in Calendar applications. The focus will be on providing tools that are in compliance with existing standards like iCal (RFC 2445).
    Downloads: 0 This Week
    Last Update:
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  • 12
    This is a free OpenSource Microsoft Project file Viewer. It relies on the "Apache POI - Java API To Access Microsoft Format Files" project. A bundle distribution of the application can be accessed from the following url: http://mspviewer.blogspot.com/ If you like this software and are a developer, check out: https://sourceforge.net/projects/crudzillawebapplicationbuilder/
    Downloads: 0 This Week
    Last Update:
    See Project
  • 13

    Plannerz

    A MySQL based multiuser time management system built in Java.

    This system offers a multi-user timetable management and scheduling system. Users add, delete and modify personal timetable entries as well as schedule common meetings involving other users. The system provides an easy to use user interface to find free available slots in others' time tables. Set customizable email reminders for events and generate PDF reports about users' activity.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 14
    A simple, easy to use, calendaring and booking component for Joomla. PBBooking offers live calendar integration both for reading availability and for writing appointments back to your calendar.
    Downloads: 0 This Week
    Last Update:
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  • 15
    RDVZ is a web application for meeting organization between several users. It works through an easy poll system to find the best meeting dates.
    Downloads: 0 This Week
    Last Update:
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  • 16
    A system for creating and administrating membership and bookings of a ski club.
    Downloads: 0 This Week
    Last Update:
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  • 17
    SPM for XOOPS is a set of XOOPS modules (collaboration management, document management, tasks organizer, events calendar, etc) to manage projects and all related tasks with them.
    Downloads: 0 This Week
    Last Update:
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  • 18
    Flash/PHP/MySQL based bookings-calendar system.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 19
    minthcm

    minthcm

    Free, open-source Human Capital Management system

    minthcm.org is a free and open-source tool for Human Capital Management. Mint based on two popular, well-known business applications: SugarCRM Community Edition and SuiteCRM. This is why we often say that MintHCM is CRM reinvented. You all know how much goes into technological development of this type of business software… That's why we need your help. Thanks to the open code of both SugarCRM CE and SuiteCRM we were able to reintroduce some features, redesign other, and provide brand new system to the users. The code of MintHCM remains open so feel free to use it.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 20
    phxEventManager
    This app is not affiliated with columbussoft.com or skyeventsmanagement.com. They are shill sites that took over this app's website domain to trick people into hiring them.
    Downloads: 0 This Week
    Last Update:
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  • 21
    minical

    minical

    Open-source Property Management System (PMS)

    miniCal is an open-source project contributed by various PMS vendors to collectively improve and maintain one PMS platform. Everyone is welcome to use miniCal for free, resell, or make a business out of this project.
    Downloads: 0 This Week
    Last Update:
    See Project
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