The panel at Sync Conf 2025 brings together @tannerlinsley.com, @jamescowling.dev, @schickling.dev and @aaronboodman.com for a deep dive into challenges and tradeoffs between the technical approaches being explored in sync today.

It was agonizing to choose from among the 34 excellent submissions, but here are the four talks selected from our CFP process!

Host of Latent Space and AI engineering master @swyx.io is joining us at Sync Conf 2025. Tastemaker, product builder, and voice behind AI Engineering Summit.

Sunil Pai from Cloudflare will present at Sync Conf 2025. Sunil is the creator of Partykit, and now working on edge computing with D1 + Durable Objects. He'll speak about how sync engines are a perfect fit for building agentic AI apps.

Carl Sverre @f0a.org of SQLSync is speaking at Sync Conf 2025 on partial replication. He takes a slightly contrarian view: no CRDTs, but instead block-level replication. Hear all about it on Nov 12.3

Welcome Frank McSherry @frankmcsherry.bsky.social to Sync Conf 2025. Pioneer of sync technology, inventor of Differential Dataflow, and founder of @materialize.com, Frank will trace the evolution of sync and stream processing.

With rising user expectations set by apps like Linear, Figma, and Notion, the next generation of software will need sync engine technologies to meet the new quality baseline." @schickling.dev

"From developer experience to user agency and data ownership. Different motivations unite into a stronger coalition for local-first tech." @adamwiggins.bsky.social

"Sync is predicted to be a key technology for the coming years. This one-day, 300-person gathering could be remembered as a seminal conference. That group of people who all went on to do amazing things. " @thruflo.com

Sync seems to be having a moment among web developers!

"Should companies build their own sync engine or rely on off-the-shelf solutions?" @schickling.dev. A topic at Sync Conf.

Our second #special is out. Following the great success of @localfirstconf.com in Berlin, we're excited to share more about the vision for SyncConf 2025 in SF. Full episode links and show notes in the comments.

Lee Byron @leebyron.bsky.social is the co-creator of #GraphQL, now at #OpenAI. He'll be speaking at Sync Conf 2025, breaking down how sync powers the next wave of agentic systems.

Notion redefined how teams collaborate. At Sync Conf 2025, Angelique Nehmzow will reveal the sync engine behind Notion’s offline-first, multi-user experience, and why it’s been key to their success.

Early bird tickets are gone! We’re counting down to the talks, the ideas, and the conversations in SF.

Tanner Linsley (@tannerlinsley.com) creator of @tanstack.com, is bringing his vision for app dev to Sync Conf 2025. From TanStack DB to mainstream DX, he’ll share where sync belongs in the next wave of software.

Announcing Sync Conf 2025. Join us in SF on Nov 12th.

The Community Day workshops just dropped! www.youtube.com/@localfirstc...

Watch @devagr.bsky.social talk about sync engine's best friend: Fine-grained rendering. youtu.be/YQT26cnCKqo?...

Watch @patternist.xyz talk about Beelay, a (reasonably) generic encrypted sync protocol for CRDTs. youtu.be/neRuBAPAsE0?...

Watch @expede.wtf talk about Safe in the Keyhive: Local-first access control with E2EE and capabilities youtu.be/iLp2xBMud10?...

Watch @thruflo.com talk about Introducing TanStack DB youtu.be/ia9FpY_Sw_4?...

Watch @timoth.ee talk about building a Yjs sync provider using Cloudflare workers. youtu.be/CDNGdrJajRc?...

Watch the panel consisting of ‪@adamwiggins.bsky.social‬, @martin.kleppmann.com, ‪@aaronboodman.com‬, and Peter van Hardenberg answer the big questions of the Local first. youtu.be/86NmEerklTs?...

Watch @paulbutler.org talk about CRDTs as a temporal data structure. youtu.be/b4fDzmNE50U?...

Watch ‪‪@artman.bsky.social‬‬ talk about building a synchronous experience with asynchronous data using Linear's sync engine. youtu.be/bnOpm3a1fRE?...

Watch @tomayac.com talk about learning just enough about Chrome built-in AI to be productive. youtu.be/klKUCG-3Dmo?...

Watch @anselm.io talk about how local-first is accidentally perfect for the AI age. youtu.be/e3-yIWGNBLQ?...

Watch @mweidner.bsky.social talk about collaborative text editing without CRDTs or OT. youtu.be/5CFrpd0sG-g?...

Watch @schickling.dev‬ talk about sync different: Event sourcing in local-first apps. youtu.be/nyPl84BopKc?...

Watch @aaronboodman.com‬ talk about General-purpose sync with IVM here: youtu.be/39CizIAHpw0?...

The talks from Day One have been published. To kick off the conference, @rsms.me is talking about Playbit Sync. youtu.be/KMcmMm8v5_E?...

"Powering offline-first forestry in Europe's wilds" Alexander Thiele delivering a great talk looking at the challenges faced when building a synchronization engine in Flutter.

"5 years of P2P web browser development" Mauve Signweaver with a great talk about the Agregore web browser, how it works, and how it's evolved over the past five years of development.

"The disappearing framework, and many concepts you don't need with Local First" Nate Wienert with a talk making the case for why shifting data into a library makes for better UX, and a simpler framework.

"How sync engines simplify the local first stack" Nikita Prokopov of Instant DB delivering a great talk on the complexities of traditional stack, and how a sync engine makes development easier.

"Why Local First matters to businesses" Adam Fish delivering a great talk on how local-first is transforming how businesses operate, improving revenue through higher uptime, streamlining operations by reducing dependencies.

"Local First & social software in the era of LLMs" Zhanna Sharipova with a great talk on the lessons learned from Anytype's journey from productivity to social software.

"The last mile of Local First" @jessmart.in on data ownership, local first’s last mile problem. Get this right and users control their data across applications forever.

"Local First & social software in the era of LLMs" Eileen Wagner of @inkandswitch.com with her great insights into the UX design challenges with local first software and AI.

"Local-first OS" Seph Gentle @seph.bsky.social with an incredible talk on how we should create an ecosystem that breaks down data silos via a local first operating system.

"15 years of Local First: a best-of report from the field" Jan Lehnardt @janl.bsky.narrativ.es is opening day two of the conference with an incredible overview of being at the forefront of local first software with his work on CouchDB and PouchDB.

"Sync engine's best friend: fine-grained rendering" Dev Agrawal @devagr.bsky.social with an awesome talk about how sync engines allow fine grained reactivity all the way from the server to the UI.

"Beelay, a (reasonably) generic encrypted sync protocol for CRDTs" Alex Good @patternist.xyz presented how to end-to-end encrypt CRDTs using Beelay from @inkandswitch.com.

"Safe in the Keyhive: Local-first access control with E2EE and capabilities" Brooklyn Zelenka @expede.wtf‬ with an awesome presentation of the work from @inkandswitch building Keyhole, a local-first access control and encryption system.

Introducing TanStack DB @thruflo.com with a great presentation introducing a new front end @tanstack.com library to help progressively adopt sync in any app, with any backend.

"Building a Yjs sync provider using Cloudflare Workers" Timo Wilhelm with a brilliant presentation on how you can use @cloudflare.social Durable Objects to build a sync provider for Yjs.

"The big questions of Local First" Incredible insights from @adamwiggins.bsky.social, @pvh.ca, @aaronboodman.com and @martin.kleppmann.com in our discussion panel. The ideals of Local First, where AI fits in, and how important offline support is.

"CRDTs as a temporal data structure" @paulbutler.org gave a brilliant talk, explaining how to use the Yjs CRDT toolkit to store temporal data.

"Building a synchronous experience with asynchronous data" @artman.bsky.social gave a great talk about how Linear maintains a synchronous api, with the DX their devs love, when lazy loading data from the server.