Local-First, sync engines, CRDTs
Local-First Peer-to-Peer apps with js-libp2p, IPFS and OrbitDB
<p>I am working on several prototypes with js-libp2p, IPFS and OrbitDB for peer-to-peer syncing CRDTs in OrbitDB. I'd like to talk about what it all means in practice from a web developer perspective working with those technologies, WebAuthN/Passkeys, DIDs, UCANs, decentralised storage and pinning networks — also from a security perspective in times when cloud services are failing and account breaches are becoming the norm.</p>
<p>An account-less, offline-first and local-first simple-todo PWA with WebAuthN:
https://simple-todo.le-space.de/#/orbitdb/zdpuAskw4Xes4nxR1YNV8TxK2qmrDgceAqEoGHDtTAUhQWvDP</p>
Additional information
| Live Stream | https://live.fosdem.org/watch/k3201 |
|---|---|
| Type | devroom |
| Language | English |
More sessions
| 2/1/26 |
<p>Welcome to the "Local First, sync engines and CRDTs devroom", first edition this year at FOSDEM'26. We are excited to propose you a full day of amazing talks ranging from CRDT libraries and frameworks, to local first projects using them, and including academic research, UX design, sync protocols and engines.</p> <p>We believe Local First software is the future of app development. But what is Local First software? In this short introduction we will touch upon the general concepts and describe ...
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| 2/1/26 |
<p>CRDTs are an exciting primitive for distributed state. In local-first apps, synced CRDTs can be framed as a natural extension to reactive local state, allowing developers to build eventually consistent multi-device and multi-user apps, with business logic living completely on the client, only requiring generic syncing infrastructure.</p> <p>A key feature that traditional backends solve remains a challenge, though: how do permissions work in this world? In addition to being a ...
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| 2/1/26 |
<p>Yjs is one of the oldest and most widely used libraries that enhance web editors by allowing multiple users collaborate over documents in real time, also without requiring continuous network connection. Evernote and Jupyter Notebooks are among many of its prominent users.</p> <p>During this presentation we'll address some of the common pitfalls that new developers may encounter when working with Yjs library, what architectural foundations are causing them to happen and what can we do to ...
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| 2/1/26 |
<p><a href="https://github.com/makeplane/plane">Plane</a> is an open source project management tool used by thousands of teams. A year ago, we shipped Wiki — a collaborative documentation system built on Yjs with real-time editing, offline support, and version history.</p> <p>Yjs is remarkable. Kevin Jahns and the community have built something incredible — real-time sync, conflict resolution, offline editing, all handled elegantly. But integrating a powerful library is just the start. This ...
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| 2/1/26 |
<p>Automerge is a mature library for building local first applications by enabling version control for structured data. The strategy is to capture all edits to data at a very fine grain (e.g. per keystroke when editing text) and then present a good API for managing concurrently edited versions of this data. </p> <p>The version control approach to collaboration makes working concurrently feasible and makes servers fungible - it increases user autonomy, but it introduces problems as you can't rely ...
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| 2/1/26 |
<p>NextGraph is a protocol, a framework, and a platform that supports easy development of Local-First, decentralized, secure and private apps.</p> <p>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 all the requirements of portability, interoperability and security needed today for building a true alternative to ...
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| 2/1/26 |
<p>Building fast, resilient, and collaborative applications increasingly demands more than reactive UI frameworks and client-side state management. The next generation brings reactivity to the data layer itself—letting applications stay in sync with the backend automatically through a sync-engine architecture.</p> <p>This talk explores how <a href="https://tanstack.com/db">TanStack DB</a> provides a practical path toward such architectures without requiring a rewrite or commitment to a ...
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