JEP - Joined Editors Protocol
JEP is a protocol for decoupling editor frontends from language supporting backends. This way, support for a particular textual language can be reused in many different editors. As an additional benefit, language backends can be deployed independently of the editor frontends. This allows for example, to ship a tool with support for its DSL and thus make sure that language support is up-to-date.
The primary focus of JEP is editing on a local machine, in which case communication between frontends and backends is local. As an additional usecase though, frontends may run in a web browser with the backend running on a remote server.
This Github repo contains the JEP protocol description in the file "protocol.md".