Open Source Task Managers

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).

Mindwtr: The Privacy-First GTD System Mindwtr is a Getting Things Done (GTD) productivity tool designed for "Mind Like Water." It runs completely offline—no accounts, no tracking, and no subscriptions. The Core GTD Workflow Capture: Instantly offload thoughts to your Inbox. Clarify: Process tasks rapidly with the built-in "2-Minute Rule" timer. Organize: Sort tasks by Contexts (@work, @home), Areas, and Projects. Reflect: Keep your system trustworthy with a guided Weekly Review. Engage: Filter Next Actions by energy level or time available. Powerful Features Local-First: Your data lives on your device (SQLite). You own it 100%. Flexible Sync: Sync privately via File System (Syncthing, iCloud) or WebDAV (Nextcloud). Focus View: A unified dashboard for your calendar events and next actions. Kanban Boards: Visualize projects with drag-and-drop columns. Stop managing your data. Start getting things done.

Freeplane is a widely used mind mapping tool. GTD is a time management methodology by David Allen. Freeplane GTD is an addon, that can collect tasks specified in a mindmap, thus allowing the users of Freeplane to use the concepts of GTD in their mind

Todo task manager with simple, fast and intuitive user interface. It supports subtasks, reminders, user defined statuses, categories and filters, custom ordering, text formatting, clickable links etc. Overview of functions: https://sourceforge.net/p/too-doo/wiki/

Nomad PIM is a free extensible personal information manager. It contains modules for personal notes, journal, address book, personal finances, task management, time tracking and evaluating basic fitness measurements.

ITMS gives users the ability to assign and manage tasks in an organization. ITMS sends task assignment notifications and reminders via email. Implemented in PHP, ITMS supports MySQL, Oracle, LDAP, and SSL.

This is task management software for people who want to record, remind and monitor any task/job/ project. It provides facilities for breaking tasks into smaller and smaller tasks. All releases come with netbeans project and graphics files.

This project and task management software written in modern XHTML/Javascript/PHP/MySQL follows a wiki-like scheme of editing content for simple organizing of people.

ToDoBook is a hierarchic task management tool, it allows you to sub-divide your tasks into more manageable pieces. It is written in Java (it is portable), tasklists are stored in XML, and it is compatible with ToDoList from AbstractSpoon Software.

Ukolnicek is a multi-platform (Windows, Linux, OS X) PIM tool. It allows to keep all your personal task in a graphical and easily accessible form to help manage your time efficiently. Using synchronization you can access your data from everywhere.

School project. Task management system using a Mobile J2ME application, a Swing desktop application and a Java Webservice. This project makes use of the Google Calendar and Yahoo Maps API's.

phpDesktop is a light-weight, multi-user organizer, including interconnected modules for scheduling, task management, contact management, and file storage; targeted towards ease of use, associative labeling, and support for full meta-commenting.

phpTasks provides a multi-user web-based task management system with flexible priority and logging features.

TaskCal Internet standards based human task management and process interaction. TaskCal is an iCalendar wrapper to the jBPM process manager, providing standards based calendar agent access to an actors tasks via email (iMIP), HTTP (.ics) and CalDav.

workbase is a web based work/task management system intended for small companies that allows allocating tasks to employees and managing projects with little effort