PNotes is a Office Tools software developed by Andrey Gruber. After our trial and test, the software is proved to be official, secure and free. Here is the official description for PNotes:

Marydown Editor: Managing your day-to-day life is not an easy job to do. There are so many things to concern for - housekeeping, shopping, children... And what about cousin's birthday you always forget or important phone numbers? Undoubtedly your working place is covered with Dusty yellow (or blue, or pink) sticky notes. If so - PNotes is right for you. Throw the physical stickies away and replace them with virtual ones on your desktop.

Features:

Ease of use - no installation, just unpack the downloaded archive to any location and run PNotes.exe.
Portability - PNotes does not require installation, it can be started from any drive (fixed or flash) and leaves no traces on host computer after finishing.
Scheduling - use various schedule types to be reminded about significant events by many different ways. Using this feature you may just hide notes and don't worry, you'll be notified in time.
Speaking notes - instead of sound files you may force the notes to speak with you reading their text aloud - isn't it a cool feature?
Notes' exchange over local network - keep in touch with your colleagues and friends.
Overdue notes tracking - stay alerted even with overdue reminders.
Tags - add any number of predefined tags to each note for further searching and sorting.
Password protection - prevents unauthorized access to program.
Encryption - allows all your notes to be stored as encrypted files, so nobody could read their content, even in case you lose your USB stick.
Password protection for single note/group - protect your notes even more strongly.
Synchronization - local or on-line via FTP protocol - always stay synchronized.
Ability to pin notes to selected window - all you need appears in time.
Control Panel - this is your central command post. All management is put into effect here.
Groups - divide notes into groups of your choice, create new groups and subgroups, control all by mouse click or drag-and-drop.
And more...