The Synapse Web Client is a Google Web Toolkit-based single-page application, the web client of the Synapse REST service core. It provides access to the the cloud-hosted Synapse backend services.
The current SWC release build can be accessed by visiting https://www.synapse.org/
For more information about Synapse, please see the Synapse Docs.
Interested in spinning up a local web client? Go to the SWC Developer Bootstrap to find out how.