Cryptocat is free software that aims to provide an open, accessible instant-messaging environment that encrypts your conversations and works right in your browser.
Everyone can use Cryptocat’s OTR encrypted messaging protocol which provides accessible conversations.
Cryptocat is cross-platform and it works on Mac OS X, Windows and Linux.
The program would not be useful for those looking to find other users for chatting; but those with existing contacts could use the application to chat in a separate area.
Cryptocat is an Open-Source experiment – the goal is to provide the easiest, most accessible way to chat while maintaining your privacy online, because we believe in Internet privacy.