Hero - Hero offers student behavior management applications for K-12 schools.
Todoist - Todoist is a to-do list that helps you get organized, at work and in life.
Top Kontor handicraft - Top Kontor handicraft is a handyman software for daily office work that has features such as invoicing, expense accounting, time tracking and much more.
TaskPaper - Plain text to-do lists for Mac
AdvancePro - Fully integrated supply chain management software
Microsoft To-Do - Task management tool