Warning: this may be a bit stale...
. ├── cmdclient Basic CLI python Matrix client ├── demo Scripts for running standalone Matrix demos ├── docs All doc, including the draft Matrix API spec │ ├── client-server The client-server Matrix API spec │ ├── model Domain-specific elements of the Matrix API spec │ ├── server-server The server-server model of the Matrix API spec │ └── sphinx The internal API doc of the Synapse homeserver ├── experiments Early experiments of using Synapse's internal APIs ├── graph Visualisation of Matrix's distributed message store ├── synapse The reference Matrix homeserver implementation │ ├── api Common building blocks for the APIs │ │ ├── events Definition of state representation Events │ │ └── streams Definition of streamable Event objects │ ├── app The __main__ entry point for the homeserver │ ├── crypto The PKI client/server used for secure federation │ │ └── resource PKI helper objects (e.g. keys) │ ├── federation Server-server state replication logic │ ├── handlers The main business logic of the homeserver │ ├── http Wrappers around Twisted's HTTP server & client │ ├── rest Servlet-style RESTful API │ ├── storage Persistence subsystem (currently only sqlite3) │ │ └── schema sqlite persistence schema │ └── util Synapse-specific utilities ├── tests Unit tests for the Synapse homeserver └── webclient Basic AngularJS Matrix web client