Open Source Mac Calendar Software

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

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.

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

A simple agenda tool written in PHP with MySQL backend. An agenda tool accessible everywere there's internet. Easy to install and configure. Key-features include: scheduling appointments, holidays, todo lists, secure access, multiple users, etc.

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.

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.

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.

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.

PANDA - Personal Assistant for Notes, Dates and Addresses. Panda is a tool for managing your notes, dates and addresses. Enter notes as simple text, keep addresses as plain fields and manage a time table as well as an elementary calendar.

An object-oriented library written in PHP that allows reading and writing iCalendar files. It is easy to use, fully standards compliant, and powerful. Intended audience: application developers who want to support iCalendar (RFC-2445, iCal).

BRIM is a MVC framework, written in PHP and based on items with a hierarchical relationship. The list of plugins make BRIM a Information Manager with plugins like bookmarks, a calendar, contacts tasks, notes, RSS etc. The application is multilingual.

CALimba is a multi-user platform to manage your calendar and your contacts.

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.

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.

The BlackBox - austrians oldest, still existing online community is about to develope a new collaboration-ware.

Digital Planner allows users to create tasks and appointments and will even give you a reminder for scheduled tasks.

GApp is for anyone that lives in GMail and/or uses GMail labels for Getting Things Done (GTD). GApp is focused on running the Google Apps on the Mac OS X desktop, allowing you to skin the GMail interface, and provides a searchable GTD view of your Inbox.

Helper is an integrated PIM and social networking (blog, RSS, foaf, etc) client. Allows to store, annotate and navigate information uniformly by means of folders, tags and categories. Based on OWL, Eclipse RCP and open standards (Dublin Core, foaf, etc).

A simple, minimalistic To-Do-List coded in Java with various saving abilities (file, xml, mysql, hsqldb)

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).

web based groupeware with calendar, contacts / tasks / project management.

Manage your time, life, project, calendar and to do list in one program.

MobScheduler is a mobile calendar and scheduler resource for J2ME platform, integrated with web 2.0 Google's calendar platform based on its event concept.

MyTaskScheduler-v1.0 is a cross platform personal task scheduling application. It provides a task listing system controlled by a calendar. It enables the users to record tasks and set reminders for a task on any day of any year. [Requires JRE 1.6.02]