LW.Org offers public instant messaging and mail services.
You can register an IM/Mail account directly in band using your favorite client (that supports xmpp) or through this website, after via lightwitch.org you'll be able to chat with anyone who is using any federating server on the xmpp network.
This service has a protocol score by the Conversations tester of:
lightwitch.org *im* service is running on Metronome IM an opensource lightweight xmpp server written in Lua based on Prosody, compliant with latest XMPP RFCs (6120-6121)
- Enforces using secured connections for both client and server streams
- Supports a wide amount of extensions, including: Stream Management, BOSH, MAM etc.
- Support of Microblogging using PubSub
- Support of MUC
Both developing the software and mantaining the serving infrastructure costs a fair amount of money and personal effort.
If you use this service and like it please consider making a donation via PayPal.