NextGraph is a protocol, a framework, and a platform that supports development of Local-First, decentralized, secure and private apps.

By combining the best of the local first world (Yjs, Automerge CRDT libraries), a graph database, DID (decentralized identifiers) for users and documents, and end-to-end encryption plus encryption at rest, we provide an SDK that offers al the requirements of portability, interoperability and security needed today for a true alternative to Big Tech platforms and products.

We are engaged with a series of projects that are using our SDK (AtomicServer.eu, ActivityPods.org, Miru.js.org, CryptPad, Dokie.li) and we are currently finalizing the first beta release of the SDK. It will be ready, together with its full documentation, by FOSDEM time, and we want to announce at that moment.

In this talk, we would like to dive into details of implementation of the E2EE sync protocol, the specifics of an encrypted sync protocol for CRDTs, the cryptographic capabilities that enable decentralized access control, and our 2-tier overlay network based on a pub/sub. Our philosophy is "zero single point of failure". With that in mind, we completely got rid of dependencies on DNS, and only rely on IP. Our broker can be and should be self-hosted, and forms a federation of decentralized servers.

The protocol and SDK can be used to develop any kind fo app, including messenger, productivity tools, editors, and social networks. All apps developed with our SDK can be built to webapp, Linux, Android, iOS, macOS and Win, thanks to the use of Tauri. All our codebase is in Rust, and MIT/Apache 2.0 of course. We recently released a new ORM mechanism that does all the heavy lifting of managing the database. Developers just need to declare the schema they want to use, and then objects are directly mapped to reactive components in React, Svelte, VueJS, via proxies and signals.