If you need a complete organizer, to keep track of all your appointments and with the possibility to add notes, esyPlanner is exactly what you were looking for. esyPlanner is a free application that can be installed on a pendrive to have it handy at all times, that doesn't have any more aspirations than to help you organize your agenda.
Complete organizer with all functions simplified to the max
This organizer includes alerts, notifications, and notes among other options so that an alert can activate at specific times of the day so that we don't forget about something important. It has support for images, to be able to save a diagram or photo in a note so that we remember properly what we have to do.
And as well as the complete planner, we'll be able to use the search engine, that will allow us to finds any note, alert or entry in the organizer in a matter of seconds.
All in all, a complete organizer with all the features necessary, and what's even better, free of charge.