A very good Post-It-clone with many spezial features like password-protection.
Sticky-Notes.net
Crystal Office Systems
Reticent
MoRUN.net
NotesPlusPlus.com
Freebird
iMagic
jalada GmbH
Carsten Arnholm
Alawar Entertainment
Little Fish Software
XDE
uCertify.com
Viktor Petkoslavovich
MIKSOFT