2do is a simple to-do list manager written in PHP and using a MySQL database backend. It supports unlimited numbers of projects, has templated HTML allowing for complete customisation, and can be publically viewable by all, or can be protected by passwords.
ackerTodo is a web based todo list manager written in PHP and using mySQL to store all of the information. It supports multiple users, daily tasks, and a way of showing you tasks are overdue.
Agnostos is a simple web-based task management system, allowing you to maintain a set of todo lists for a number of people, departments and workgroups.
Holly is TODO lists with an interface for the tech-savvy. If you aren't into code and text editors this will make you cry.
Internet Task Management System
Internet Task Management System tracks and manages the delegation of tasks in a business environment. Users of ITMS can belong to multiple groups, and can delegate private tasks or tasks that are owned by groups they belong to. Task assignment notifications are sent out via email when a task is assigned, and reminder emails are sent out every night based on each user's preferences.
minido is a simple, generic, multi-user, database free todo list manager / tracking system written in GTK2.
Nag is a set of PHP scripts that implement a simple, multiuser task list manager.
phpTasks provides a multi-user web-based task management system with flexible priority and logging features.
phpToDo is a simple todo list written in PHP using a MySQL backend. It provides a very simple and efficient way of keeping track of things to do, and it sorts tasks by their priorities. The user interface is designed to make usage as easy and efficient as possible.
PMtool is a PHP based web-application to create tasks for change/bug requests, post timesheets, and calculate number of times used.
RememberTheMilk is a command line tool that provides a command line interface for the RememberTheMilk task list manager. It includes RTMAgent.pm, a Perl module that implements the low-level API.
ShareToDo is a ToDo List application. Using ShareToDo, you can manage your todo list privately, or share todo list with others.
tasked is a PHP-based to-do list application. It supports multiple users and features a MySQL backend.
TaskFreak! is a simple but efficient web based task manager written in PHP. Features include: GTD compliant, easy setup with MySQL or SQLite, and open source.
tasks is a web based, hierarchical task manager/to-do list/lightweight project manager.
(commercial) Tasks is built on PHP and MySQL. It features a dynamic hierarchical view of your tasks, scheduling due dates, and associating URLs with and uploading and attaching files to tasks. RSS Feeds and iCalendars of your tasks are available.
(commercial) Tasks Pro is a powerful web-based task manager (to-do list manager) that allows you to organize your tasks in a hierarchical structure. Group controls allow projects to be set up only for people who need to see them.
To-Do is a web-based todo list application. It is designed to be lean, professional looking and themeable. The interface is very intuitive and requires no special installation beyond untarring.
Tobedone is a ToDo management program which organizes complex projects in tree structures and provides you many manipulation tools.
ToDoList.php is a set of PHP3 scripts that create a web-based list of things to do. Items can be added and removed, and are sorted by an assigned priority.
Tracks is a web application that is specifically designed to implement the Getting Things Done (GTD) methods
Tudu Lists is an on-line application for managing todo lists. With Tudu Lists, todo lists can be easily accessed, edited and shared on the Web. It is a simple but effective project management tool.
ukolovnik is a simple todo manager written in PHP and using MySQL as its backend.