Open Source ChromeOS Calendar Software

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

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.

React-Date-Picker is a React component that combines editable date fields with a popup calendar interface. Users can enter dates manually or choose them visually through its integrated React-Calendar component. It supports selecting days, months, years, and broader periods depending on the configured detail level. Localization uses standard language tags and browser locale information without requiring Moment.js. Developers can define minimum and maximum dates, formatting rules, calendar behavior, placeholders, and custom icons. Accessibility options include dedicated labels for calendar controls, date fields, native input, and clearing actions. The component can be styled with its default CSS or customized to match an application's interface.

React-Calendar is a customizable React component for selecting dates and navigating calendar periods. Users can choose individual days, months, years, or decades through progressively broader views. Range selection allows applications to capture both the beginning and end of a period. Multiple calendar systems are supported, including Gregorian, ISO 8601, Hebrew, and Islamic configurations. Localization relies on browser internationalization capabilities and works with virtually any language. Developers can control displayed periods, views, selectable ranges, values, and styling through component props. The package requires no Moment.js dependency and is designed to remain lightweight and easy to integrate into modern React applications.

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.

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

openCRX moved to https://github.com/opencrx

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.

A Java library for reading and writing iCalendar (*.ics) files.

JDavide (per gli amici JD) è un software gratuito per la gestione dello Studio Legale che aiuta l’avvocato nell’espletamento delle operazioni quotidiane. Funzionalità: pratiche, agenda, formulario, atti, parcellazione, rivalutazione, ecc.

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.

PHP driven Inventory, HelpDesk, Support, Issue Tracking, and Knowledge Base web application. Focuses on simplicity and ease of customization. Sort of a mini-Directory solution for SMBs using PHP and any Pear::DB supported database.

Calendar Multiplatform in .NET

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.

Periodic Calendar is a GUI application which assists in women menstrual cycles tracking and fertility periods prediction. Periodic Calendar provides support for BBT and sympto-thermal methods which have the highest reliability.

IlohaMail is a PHP based lightweight full featured multilingual webmail program with IMAP and POP3 support. IlohaMail also includes a full-featured contacts manager, bookmarks manager, and scheduler.

Reqcore is an Applicant Tracking System built for companies receiving more applicants than they can effectively review. Instead of forcing recruiters to manually screen hundreds of résumés, Reqcore evaluates every applicant against role-specific hiring criteria and turns large applicant pools into a clear, prioritized shortlist. Each evaluation includes an explanation of why the candidate matches, helping hiring teams identify strong applicants without losing them in the noise. Reqcore is best suited to companies whose main recruitment challenge is reviewing applicants—not attracting more of them. It combines applicant tracking, candidate evaluation, pipeline management, and team collaboration in one modern hiring platform. Key Benefits: * Built for Applicant Overload: Manage roles receiving hundreds or thousands of applications without overwhelming recruiters. * Criteria-Based Evaluation: Evaluate every applicant against the qualifications and requirements that matter for

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.

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).

Calizo is a calendar with a zoomable timeline. Unlimited zooming allows to manage historic, genealogical, biographic data, everyday tasks, projects or life plans - for scheduling, genealogy, project management, todo lists, link- and file- organizatio

Open Source software (PHP) managing iCal (rfc2445) files, for non-calendar systems like CMS, project mgmt systems etc. able to manage calendar information like agendas, tasks, reports, totos, journaling data and communicate with calendar software.

Platformunabhängiger Kalender zum Eintragen von Ereignissen mit Erinnerungsfunktion. Beinhaltet alle deutschen Feiertage. Zwischen den Ansichten Jahresansicht, Monatsansicht, Wochenansicht und Tagesansicht kann umgeschaltet werden. Der Kalender kann im Hintergrund laufen und ist personalisierbar. Automatische Erinnerungsfunktion für nahende Ereignisse / Feiertage. Synchronisation über einen FTP-Server möglich.

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.

PsyPlan open-source astrology publisher. Popular personal appointment book planner, diary, calendar, daily horoscope. PHP, AJAX, for web browser on Internet or desktop. Ephemeris calculation engine, interpretations, complete system. Hardware independent.

A planning calendar for scheduling holy services at small parishes. Synchronizes with GoogleCalendar so as to be able to collaborate with mobile devices.