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CfP for Local-first Conf 2026 is open. Adam and Johannes discuss this year’s conference themes. Mentioned in podcast: Adam Wiggins: x.com/_adamwiggins_ / adamwiggins.comLocal-First Conf 2026Links:  Website: localfirst.fmX/Twitter: x.com/localfirstfmYouTube: youtube.com/@localfirstfm

In this special episode, together with Adam Wiggins and James Arthur, we’re excited to announce the first Sync Conf in San Francisco in November. Mentioned in podcast: James Arthur: x.com/thruflo / bsky.app/profile/thrufloAdam Wiggins: x.com/_adamwiggins_ / adamwiggins.comSyncConfLinks:  Website: localfirst.fmX/Twitter: x.com/localfirstfmYouTube: youtube.com/@localfirstfmThank you to Jazz for supporting the podcast.

The guest of this episode is Adam Fish, co-founder and CEO of Ditto, a end-to-end syncing platform with a focus on resilient connectivity. In this conversation Adam shares the origin story of Ditto, his prior related work on Realm and the hard networking problems that Ditto is solving. Mentioned in podcast: Adam Fish: X + GitHubRealmDittoLinks:  Website: localfirst.fmX/Twitter: x.com/localfirstfmYouTube: youtube.com/@localfirstfmThank you to Jazz for supporting the podcast.

The guest of this episode is Tanner Linsley, creator of the TanStack ecosystem including projects such as React Query and TanStack Router. This episode will talk about the newest project, TanStack DB and explore the problems it’s trying to solve and how it works. Mentioned in podcast: Tanner Linsley: X + GitHubTanStackTanStack QueryTanStack DBLinks:  Website: localfirst.fmX/Twitter: x.com/localfirstfmYouTube: youtube.com/@localfirstfmThank you to Jazz for supporting the podcast.

The guest of this episode is Ben Holmes, a senior web developer and educator known for his whiteboard videos. After having spent most of his career building server-centric applications, Ben recently explored local-first software by building a simple sync engine which we talk through in-depth.  Mentioned in podcast: Ben Holmes: Website + X + YouTube + Bluesky + GitHubAstroSimple Sync EngineWarpStop Building Databases by Carl SverreSQLSyncGraftLinks:  Website: localfirst.fmX/Twitter: x.com/localfirstfmYouTube: youtube.com/@localfirstfmThank you to Jazz for supporting the podcast.

This episode's guest is Sujay Jayakar, co-founder of Convex and early engineer at Dropbox. In this conversation, Sujay shares the story of how the sync engine powering Dropbox was initially built and later redesigned to address all sorts of distributed systems problems  Mentioned in podcast: Sujay Jayakar: X + GitHub + Bluesky + LinkedinConvexDropboxTech Talk on Dropbox’s ArchitectureRewriting the heart of our sync engineTesting sync at DropboxHow Convex WorksA Map of SyncAn Object Sync Engine for Local-first AppsLinks:  Website: localfirst.fmX/Twitter: x.com/localfirstfmYouTube: youtube.com/@localfirstfmThank you to Jazz for supporting the podcast.

The guest of this episodeis Paul Butler, founder of Jamsocket and creator of the Y-Sweet project. This conversation will delve into building vs buying a sync engine and explore the various projects behind Jamsocket including Plane, Y-Sweet and ForeverVM. Mentioned in podcast: Paul Butler: Website + XJamsocketLearn YjsY-SweetPlaneForeverVMYou might not need a CRDTAI as a Player in MultiplayerBrowsertech Digest Trip Report: Local First ConfBrowsertech Digest: Encrypting offline storage for local-first appsBrowsertech Digest: Figma is a File EditorThe WebAssembly App GapLinks:  Website: localfirst.fmX/Twitter: x.com/localfirstfmYouTube: youtube.com/@localfirstfmThank you to ElectricSQL and Jazz for supporting the podcast.

The guest of this episode is Seph Gentle, a prolific software researcher who is behind projects such as the new eg-walker paper and ShareJS, one of the oldest local-first open source projects. Before, Seph also co-created Google Wave over 10 years ago which will be explored in-depth in this episode. Mentioned in podcast: Seph Gentle: Website + XCRDTs are the futureCollaborative Text Editing with Eg-WalkerHammock Driven Development - Rich Hickey Links:  Website: localfirst.fmX/Twitter: x.com/localfirstfmYouTube: youtube.com/@localfirstfmThank you to ElectricSQL for supporting the podcast.

The guest of this episode is Adam Wulf, the engineer and solopreneur behind Muse, a local-first canvas-based tool for thought. This conversation will get trough the evolution of Muse as a product, company and people who made it, reflecting on the joys and struggles of building software as a team of one. Later, the conversation will dive deep into topics such as analytics and distribution of a local-first app.  Mentioned in podcast: Adam Wulf: Website + Bluesky + Mastodon + GitHubMuse + Bluesky + X Muse Discord community  Download MuseSetappMuse Setapp launchRebuilt iPhone app Adam Wiggins' RetrospectiveMuse Sync at Programming Local First Workshop – ECOOP’22 Links:  Website: localfirst.fmX/Twitter: x.com/localfirstfmYouTube: youtube.com/@localfirstfmThank you to Convex and ElectricSQL for supporting the podcast.

The guest of this episode is Brooklyn Zelenka, a local-first researcher and creator of various projects including UCAN and Beehive. This conversation, will go deep on authorization and access control in a decentralized, local-first environment and explore this topic by learning about UCAN and Beehive. Later, the conversation will also diving into Beelay, a new generic sync server implementation developed by Ink & Switch.  Mentioned in podcast: Brooklyn Zelenka: Website + GitHub + Bluesky + MastodonMessaging Layer Security (MLS)Messaging layer security: Encrypting a group chatTreeKEMGroup Messaging for Secure Asynchronous Collaboration by Matthew A. WeidnerBeehive lab notebookUCAN Working GroupUCAN - Be in control of your auth: Brooklyn Zelenka (Local-First Conf)AutomergeWNFS Working GroupRobust Composition: Towards a Unified Approach to Access Control and Concurrency Control by Mark Samuel MillerSPKI Certificate TheoryEdwards-Curve Digital Signature Algorithm (EdDSA)Comparison of Symmetric Encryption Methods Links:  Website: localfirst.fmX/Twitter: x.com/localfirstfmYouTube: youtube.com/@localfirstfmThank you to Convex and ElectricSQL for supporting the podcast.

This is a special episode which was recorded as a Twitter space conversation between Gordon Brander, Peter Van Hardenberg, and Jess Martin.This conversation explores the ideas and trade offs of apps versus files. Mentioned in podcast Gordon Brander Peter van HardenbergJess Martin Links:  Website: localfirst.fmX/Twitter: x.com/localfirstfmYouTube: youtube.com/@localfirstfm

The guest of this episode is James Arthur, founder and CEO of Electric SQL, a Postgres-centric sync engine for local-first apps. This conversation will dive deep into how Electric works and explore its design decisions such as read-path syncing and using HTTP as the network layer to improve scalability. Towards the end we are also covering PGLite, a new Postgres in WASM project by Electric.  Mentioned in podcast James Arthur: x.com/thruflo / bsky.app/profile/thrufloElectricSQLElectricSQL - QuickstartElectricSQL - GithubDiscord - ElectricSQLPGlitePGlite - Githubdatabase.buildtrigger.dev Links:  Website: localfirst.fmX/Twitter: x.com/localfirstfmYouTube: youtube.com/@localfirstfmThank you to PowerSync and Rocicorp for supporting the podcast.

The guest of this episode is Kyle Simpson, a prolific JavaScript engineer and author of the book You Don’t Know JS. Over the past years, Kyle has been researching user identity and encryption in a local-first context which we explore in depth in this episode. This conversation will dive into the story that led Kyle to local-first including what he calls Web 2.5 and Zero Servers. Editor's Note: when Kyle speaks about SilentJS, is actually referring to QuiteJS (link below) Mentioned in podcast Kyle Simpson: x.com/getifyX / me.getify.comLocal-peer-to-peerWebauthn-local-clientLocal-data-lockLocal-vaultStorageQr-data-syncVella.aiSocket SupplyYou-Dont-Know-JSLoFi.soQuietJSLinks:  Website: localfirst.fmX/Twitter: x.com/localfirstfmYouTube: youtube.com/@localfirstfmThank you to PowerSync and Rocicorp for supporting the podcast.

The guest of this episode is Anselm Eickhoff, creator of Jazz and founder of Garden Computing. This conversation will dive deep into Jazz to learn how it works and which use cases it’s a good fit for by exploring various apps already built on top of Jazz.  Mentioned in podcast Anselm Eickhoff: x.com/anselm_io / anselm.iojazz.toolsGarden ComputingLinks:  Website: localfirst.fmX/Twitter: x.com/localfirstfmYouTube: youtube.com/@localfirstfmThank you to PowerSync and Rocicorp for supporting the podcast.

The guest of this episode is Tuomas Artman, co-founder and CTO of Linear. Prior to Linear, Tuomas had already built sync engines for over a decade at companies like Groupon and Uber. This conversation will explore how local-first and software quality was crucial for Linear’s success and how the concept of a startup MVP should be rethought.  Mentioned in podcast Tuomas Artman: x.com/artman / github.com/artmanLinearScaling the Linear Sync EngineRethinking the startup Mvp: Building a competitive productUnexpected benefits of going local-first - Tuomas Artman (Local-First Conf)Links:  Website: localfirst.fmX/Twitter: x.com/localfirstfmYouTube: youtube.com/@localfirstfmThank you to PowerSync and Rocicorp for supporting the podcast.