# Service Overview Mocha Messenger is only one part of the broader Mocha stack. The public-facing service map currently looks like this: - **Mocha Messenger** The Windows desktop client. - **Mocha Passport** Identity, account, and supporting web services. - **Notification Server** Presence, sign-in coordination, and conversation routing. - **Switchboard** Conversation relay for chat and current media lanes. For protocol-level details, the public `mochachat/Protocol` repository is the best place to start.