Todo.txt - Track your tasks and projects in a plain text file, todo.txt. A todo.

Tuio.org - Tuio is a billing and payment application that allow daycare centers and pre-schools to centralize and manage all parent billing and payment in one place.

Task Coach - Task Coach is a simple open source todo manager to keep track of personal tasks and todo lists.

Sawyer - Discover a wonder-filled world of kids classes, camps, events, and activities, right in your neighborhood

Strikethru - Strikethru is a kind of to-do list notebook for managing work lists and staying updated with the important tasks.

Yusp - Yusp is a next generation, real-time personalization engine having all product modules as defined by Gartner for various business models.