Microsoft Office Access - Access is now much more than a way to create desktop databases. It’s an easy-to-use tool for quickly creating browser-based database applications.
Todo.txt - Track your tasks and projects in a plain text file, todo.txt. A todo.
LibreOffice - Base - Base, database, database frontend, LibreOffice, ODF, Open Standards, SQL, ODBC
Task Coach - Task Coach is a simple open source todo manager to keep track of personal tasks and todo lists.
Brilliant Database - Create a personal or business desktop database fast and easily using this simple all-in-one database software. Free 30 day trial.
Strikethru - Strikethru is a kind of to-do list notebook for managing work lists and staying updated with the important tasks.