"Otr.to - p2p chat, that mean you communicate directly, no logs saved on server
Otr.to absolutely anonymous, registration free
Otr.to browser based, that mean you don't need to install or ask somebody to install software
Otr.to use OTR (Off-the-Record Messaging) - most secure cryptographic protocol
Otr.to Open-source and written in JavaScript, that mean you can check how it works"