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.

  • Fully managed relational database service for MySQL, PostgreSQL, and SQL Server Icon
    Fully managed relational database service for MySQL, PostgreSQL, and SQL Server

    Focus on your application, and leave the database to us

    Cloud SQL manages your databases so you don't have to, so your business can run without disruption. It automates all your backups, replication, patches, encryption, and storage capacity increases to give your applications the reliability, scalability, and security they need.
  • Codesoft Barcode Label Software Icon
    Codesoft Barcode Label Software

    RFID and barcode label software to set your business up for success

    CODESOFT is an enterprise-level RFID and barcode label design application offering unmatched flexibility, power, and support. Available in print-only, single-user, and network configurations, CODESOFT is designed to meet all of your barcode labeling needs. Whether your goal is streamlining label printing, printing labels using a form, connecting a scale to your label template, or integrating your business database with your label templates, CODESOFT provides a solution for your organization’s most advanced labeling needs. Connect to SQL or Oracle databases for business system integrations and greater efficiency. CODESOFT includes over 100 barcode symbologies including GS1, supports all common image formats, and enables rich text editing. Native printer drivers are included for over 4,000 thermal, thermal transfer, and inkjet label printers to ensure the best label printing quality.
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    Vtiger CRM

    Vtiger CRM

    An enterprise-class CRM and more!

    Vtiger CRM enables sales, support, and marketing teams to organize and collaborate to measurably improve customer experiences and business outcomes. Vtiger CRM also includes email, inventory, project management, and other tools, providing a complete the business management suite. Download Vtiger CRM here or sign up for a free 15-day free trial of the cloud-based application with free updates and support at https://www.vtiger.com/
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    Downloads: 1,111 This Week
    Last Update:
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  • 2
    DavMail POP/IMAP/SMTP/Caldav to Exchange
    Ever wanted to get rid of Outlook ? DavMail is a POP/IMAP/SMTP/Caldav/Carddav/LDAP gateway allowing users to use any mail client with Exchange and Office 365, even from the internet through Outlook Web Access on any platform, tested on MacOSX, Linux and Windows
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    Downloads: 482 This Week
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  • 3
    Group Office groupware and CRM

    Group Office groupware and CRM

    Take your office and CRM into the cloud!

    Installation instructions can be found here: https://groupoffice.readthedocs.io/en/latest/install/install.html Group Office is an open source groupware application. It makes your daily office tasks easier. Share projects, calendars, files and e-mail online. It is a complete solution for all your online office needs. From a customer phone call to a project and finally an invoice. The support system helps to keep your customers happy. Group Office is fast, secure and has privacy by design. You can stay in full control of your data by self hosting your cloud and e-mail. Our document editing solution keeps all data on the secured server instead of synchronising it to all user devices. GroupOffice is open source and modular. Which means it’s easy to customise and extend. You can turn off and on features and it enables any developer to create new modules for the platform.
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    Downloads: 94 This Week
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  • 4
    !!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.
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    Downloads: 41 This Week
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  • Recruit and Manage your Workforce Icon
    Recruit and Manage your Workforce

    Evolia makes it easier to hire, schedule and track time worked by frontline in medium and large-sized businesses.

    Evolia is a web and mobile platform that connects enterprises with 1000’s of local shift workers and offers free workforce scheduling and time and attendance solutions. Is your business on Evolia?
  • 5
    RedNotebook is a graphical diary and journal helping you to keep track of notes and thoughts. It includes a calendar navigation, customizable templates for each day, export functionality and word clouds. You can also format, tag and search your entries. Please find the latest releases at https://rednotebook.app
    Downloads: 29 This Week
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  • 6
    Zentyal, Linux Small Business Server

    Zentyal, Linux Small Business Server

    Zentyal is a Linux Small Business Server

    Zentyal Server is an easy to use and affordable Linux server, specially designed to meet the needs of small and medium businesses Thanks to Zentyal's Samba integration, Zentyal provides native compatibility with Microsoft Active Directory, allowing you to join Microsoft clients to a domain and manage them easily. Zentyal Server incorporates all the network services required in a small and medium business environment: * Directory & Domain Server with native compatibility with Microsoft Active Directory * Mail Server with ActiveSync and webmail * Gateway with firewall and proxy * Infrastructure Server with DNS/DHCP server, Certification Authority and Virtual Private Networks For more information and download, please access the project's home page.
    Downloads: 23 This Week
    Last Update:
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  • 7
    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: 14 This Week
    Last Update:
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  • 8
    BORG is a calendar and task tracking system written in Java. The calendar provides a nice month view, month-print, email reminders, popup reminders and to do list. The task tracker tracks issues through various states.
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    Downloads: 53 This Week
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  • 9
    qOrganizer is a general organizer that includes a calendar with schedule,reminders,journal/notes for every day, to-do list.But provides features useful for students such as:timetable and a booklet for marks and absences.It's designed to be easy to use.
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    Downloads: 8 This Week
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  • AI-based, Comprehensive Service Management for Businesses and IT Providers Icon
    AI-based, Comprehensive Service Management for Businesses and IT Providers

    Modular solutions for change management, asset management and more

    ChangeGear provides IT staff with the functions required to manage everything from ticketing to incident, change and asset management and more. ChangeGear includes a virtual agent, self-service portals and AI-based features to support analyst and end user productivity.
  • 10
    FMA is a SMS Manager, Mobile Phone Monitor, Remote Control Agent, Phonebook Manager, Organizer, Fun and much more; whatever you want it to be, it is whatever a mobile phone should have :-) (Currently based on Sony Ericsson features set).
    Downloads: 8 This Week
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  • 11
    The VCS to ICS Calendar Converter allows you to convert VCALENDAR files (for example generated by Nokia nbuexplorer or Microsoft Works) to the newer iCalendar format, used by Android and iOS for example. It allows the parsing of events and todo's.
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    Downloads: 30 This Week
    Last Update:
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  • 12
    openCRX - Enterprise Class CRM

    openCRX - Enterprise Class CRM

    professional CRM and groupware service, ready for the cloud

    openCRX moved to https://github.com/opencrx
    Downloads: 4 This Week
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  • 13
    time management made easy - timeEdition is targeted at all users in a computer workplace who value detailed documentation of their working hours, whether they use it for customer billing or for monitoring the duration of individual projects.
    Downloads: 4 This Week
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  • 14
    Lifeograph

    Lifeograph

    private digital diary & note taking appliaciton

    Lifeograph is a diary program to take personal notes on life. It has all essential functionality expected in a diary program and strives to have a clean and streamlined user interface.
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    Downloads: 12 This Week
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  • 15
    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: 3 This Week
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  • 16
    openjardin

    openjardin

    A software for the management of a permaculture oriented garden.

    Openjardin is a free software GNU gpl 3.0 for the management of a permaculture oriented garden. (Français-Italiano-English) It allows interactive management of crop plots, with annual planning and crop rotation . Le logiciel Open jardin est destiné à la gestion des cultures d'un jardin à partir d'un plan avec la représentation de parcelles, de fiches de cultures, d'un tableau du planning annuel par parcelle, et d'un tableau des rotations de cultures sur 5 ans pour chaque parcelle avec la visualisation des cultures précédentes colorées selon la famille botanique. Il software Open jardin è destinato alla gestione delle colture di un giardino a partire da un piano con la rappresentazione degli appezzamenti, i fogli di coltura, una tabella della pianificazione annuale per appezzamento, e una tabella di rotazione delle colture su 5 anni per ogni appezzamento con la visualizzazione delle culture precedenti colorate secondo la famiglia botanic
    Downloads: 4 This Week
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  • 17
    Agender
    With Agender you can associate notes with some date or with no date in particular, you simply start it and it will create a task-bar icon and stay in the background, without annoying you, it can run on login. Visit the website to see more.
    Downloads: 6 This Week
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  • 18
    Kimai - Time Tracking Software

    Kimai - Time Tracking Software

    Time-Tracking for companies and teams with up to 250+ users

    Kimai is web based software that tracks work time, and classifies it. It tracks time and prints out a summary of your activities on demand. Yearly, monthly, daily, by customer, by project, by action. FETCH THE LATEST DOWNLOAD FROM GITHUB: https://github.com/kimai/kimai/releases Record expenses and print customizable invoices in different formats. For further information visit: - https://www.kimai.org - https://www.kimai.cloud - https://github.com/kimai/kimai
    Downloads: 2 This Week
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  • 19
    Calendar Multiplatform in .NET
    Downloads: 7 This Week
    Last Update:
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  • 20
    WeekToDo

    WeekToDo

    WeekToDo is a Free and Open Source Minimalist Weekly Planner and To Do

    WeekToDo is a free and Open Source Minimalist Weekly Planner and To Do list App for simple and effective people. Schedule your tasks, set reminders and handle projects with To Do list and a calendar. Available for Windows, Mac, Linux or online.
    Downloads: 7 This Week
    Last Update:
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  • 21
    Kalibro for Calibration & Maintenance

    Kalibro for Calibration & Maintenance

    Calibration Control and Maintenance Management

    Kalibro is an open source free software to manage devices and tools for calibration and maintenance records. It helps you to keep inventory and reminds you the scheduled dates. Kalibro also helps you to satisfy the requirements of the Quality Management Standards like ISO9001, AS9100 and TS16949. Manufacturing, Quality and IT departments of small/medium sized companies are targeted to use Kalibro. You do not need to use spread sheet files to save your critical calibration records. See the Kalibro website (http://www.ozanh.com/kalibro) for further details.
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    Downloads: 6 This Week
    Last Update:
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  • 22
    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: 1 This Week
    Last Update:
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  • 23
    RemoteCalendars is a COM-.NET Add-in for Outlook 2003/2007, written in C#. After installing this plugin, every Outlook user should be able to subscribe, reload and delete a generic remote iCalendar (RFC 2445) from Outlook 2003/2007.
    Downloads: 1 This Week
    Last Update:
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  • 24
    Calendar
    Calendar、Task This is only a read-only mirror repository. Main repository: https://github.com/KangLin/Calendar
    Downloads: 5 This Week
    Last Update:
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  • 25

    php calendar

    free php calendar

    php mysql calendar. appropriate for internal use (for example company), easy to use and install. W3C validated for HTML5 and CSS3. day, month view. filter events by resources, upload files... designed for standalone usage.
    Downloads: 5 This Week
    Last Update:
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