Similar to myTinyTodo - simple open source to-do list script written in PHP and jQuery

One similar application that comes to mind is Todoist, which is also an online task management tool. Like myTinyTodo, Todoist allows users to create and manage multiple todo lists, add task notes and due dates, set priorities, and sort tasks. It offers a clean and intuitive interface, mobile apps, and syncs across devices. Todoist also provides collaboration features and powerful filtering options for managing tasks.

Another comparable application is Trello, which uses a Kanban-style approach to task management. Trello boards, lists, and cards mimic traditional task management methods, but with added flexibility and visual appeal. It supports tags, due dates, comments, and priority levels, and can be used individually or in a collaborative setting.

Additionally, for those seeking simplicity and ease of use, applications like Any.do and Google Keep offer basic task management features with a focus on simplicity and integration with other Google services.

In terms of features and functionality, myTinyTodo stands out for its support of multiple databases, drag-and-drop sorting, and smart syntax for creating tasks. It also provides print-friendly CSS and mobile compatibility, ensuring flexibility in how and where users access their todo lists.