Teleportal is a framework for creating a web-standards based backend & client for realtime collaborative applications. It is based on the popular Y.js CRDT, and implements a synchronization protocol on top. Teleportal focuses on giving the building blocks to create a server implementation, rather than being a single mono-lithic implementation. The project was built out of the desire for an optimized replacement of Hocuspocus (in both scale, performance & features). It currently implements communication over HTTP, HTTP + SSE, Websockets, but should scale to other bidirectional protocols. As well as being storage implementation agnostic & offering E2EE (alpha), there are plans to implement file uploads, user customizable messaging & more.