Any specific feature/application is provided by server side plugins, that browsers can then contact via the gateway to take advantage of the functionality they provide. Example of such plugins can be implementations of applications like echo tests, conference bridges, media recorders, SIP gateways and the like. A few examples describing how these plugins can be used as "bricks" to build a more comprehensive and complex application will be provided. Some references to existing usages of Janus and third-party imlementations will be presented too, as well as some notes on future plans and next steps.