My Notes Keeper is described as 'Home Of My Notes Keeper - My Notes Keeper is the premier note/outliner application for Windows 9x/2000/XP/NT. It allows you to store all of your notes and information in an easy-to-use outline, where you can quickly find what you need. (Also USB-Version available)' and is an app in the Office & Productivity category. There are more than 100 alternatives to My Notes Keeper for a variety of platforms, including Windows, Android, Mac, Online / Web-based and iPhone. The best alternative is Joplin. It's not free, so if you're looking for a free alternative, you could try Standard Notes or Microsoft OneNote. Other great apps like My Notes Keeper are Evernote (Freemium), CherryTree (Free, Open Source), NoteLedge (Paid) and Zoho Notebook (Free Personal).
Joplin is a free, open source note taking and to-do application, which can handle a large number of notes organised into notebooks. The notes are searchable, can be copied, tagged and modified either from the applications directly or from your own text editor.
A simple but effective way to keep on top of your tasks, 10 languages. ToDoList is a rare form of task management tool, one that allows you to repeatedly sub-divide your tasks into more manageable pieces whilst still presenting a clean and intuitive user experience.