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

Confluence - Confluence is content collaboration software that changes how modern teams work

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

MS SharePoint - Share, organize, and discover information with Microsoft SharePoint. Learn about SharePoint Online, OneDrive for Business, and Apps for SharePoint

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

Notion - All-in-one workspace. One tool for your whole team. Write, plan, and get organized.