Show HN: Use-Fs – A React Hook for the File System Access API and OPFS https://bit.ly/4ivPTBP

Show HN: Use-Fs – A React Hook for the File System Access API and OPFS I'm happy to say that https://bit.ly/4qCcgrr 2.0 has been released with brand new OPFS support. If you're building browser-based apps that heavily interact with the file-system this package is a must to have in your package.json! A React hook that watches a directory and re-renders when a file is added, changed, or deleted. Point it at a folder the user picked and you're reading and writing their real files — no uploads, no endless file dialogs New in 2.0: it watches the origin private file system too. No picker, no permission prompt, no user gesture — and, unlike File System API, it works in Safari and Firefox What's OPFS? A file store the browser gives each origin — real directories and files, but readable only by your own site through the File System API, never by the user's file manager or other apps. https://bit.ly/4qCcgrr August 25, 2026 at 11:58PM

Show HN: Ecdeos – P2P Web/Native Distributed OS on Entity Core Protocol https://bit.ly/4qIzfkQ

Show HN: Ecdeos – P2P Web/Native Distributed OS on Entity Core Protocol Hello, I wanted to share an update of the current progress of the Entity System. https://bit.ly/4geUCXe is one domain in a constellation of peers/sites that is the main project of the Entity System, a Tauri Rust/WASM browser engine and Rust backend built on the Entity Core Protocol. It's primarily a research prototype of a P2P distributed cross-platform userspace operating system. The long-term goal is functional P2P management of devices and applications, scaling from individual use (managing personal devices, apps and servers) to multi-user organizations with internal services/application stacks all the way to internet-scale public or federated P2P networks. Its closest parallels are Plan9, Erlang/BEAM, IPFS, ATProto, Nostr, as well as many other antecedent technologies including Git, HTTP, and other internet protocols. The particular combination of features and focus on "everything is an entity", content-addressed data, full decentralization, and its capability security model gives it a unique position in the landscape, most of it coming from the Entity Core Protocol itself. Each web deployment also ships with 30+ Entity-Apps including games, music (forgive me if the audio misbehaves, it's fully synthesized running on the main thread), art and basic tools. Entity-Apps have a basic contract with the host and run in isolated iframe sandboxes; they're currently written in Javascript using a custom engine. Also included are a few Entity-Native compute apps running as Rust WASM Entity Core peers in an iframe that show the transferable Entity System compute language running live on a cross platform generic system host interface the engine manages. The compute code is compiled/tested on a separate workbench Go project which operates a parallel implementation of the application conventions, generic system host interface and the Entity Core Protocol. The Tauri native backend peer includes support for SQLite storage, TCP and WebSockets, while the browser environment supports WebSockets and WebRTC P2P chat, file and entity transfer - with plans to add more storage, networking and application conventions. Sites and a registry example are hosted at https://bit.ly/4gSgmbB . All the Ecdeos-based domains are running with peers in "coral reef" mode (no live peer required) and can pull the CDN hosted registry names and fetch the signed hosted sites from any other domain/peer in the network; they are cached locally in each peer's local storage afterwards. Peers can sign/host their data publicly on standard commodity hosting services and both the registry and sites are available to any application that understands the Entity Core Protocol and system extension standards. For the other example domains with peers hosted on static sites as well as more background information, see https://bit.ly/4gTdF9G , https://bit.ly/4d3pY0O , or https://bit.ly/4y5IVs3 . Bills Lab is the research arm that is currently exploring the background technology from different perspectives. Almost all of the code and content is AI generated, but we do our best to make it some of the best slop available on the internet. The overall project is still early and needs to get stress tested but the design is holding up well so far. Let me know if you have any feedback. -Bill https://bit.ly/4geUCXe August 25, 2026 at 10:20PM

Show HN: I wrote a BASIC interpreter that boots on UEFI machines https://bit.ly/4itDGxv

Show HN: I wrote a BASIC interpreter that boots on UEFI machines I started writing Thoreau BASIC because I wanted a small, old-fashioned BASIC interpreter: line numbers, immediate mode, simple graphics, strings, arrays, the sort of environment where the computer starts with a "Ready" prompt and you can immediately make it do something. Then I wondered: why should it need an operating system? So I made it boot directly on x64 machines using UEFI. The UEFI version uses the Graphics Output Protocol for its framebuffer and gets its keyboard input directly from the firmware. There is no Windows or Linux underneath it. The machine boots into BASIC. It supports the usual BASIC machinery plus graphics primitives, 32-bit colour, floating point, file operations and other features I've been adding as I encounter programs that need them. There is now also a Windows version, which makes it considerably easier to try. One of my goals is compatibility with the style and behaviour of old Microsoft BASICs rather than creating a modern language that merely happens to use BASIC syntax. I'm currently porting my text adventure Pixel Prose to Thoreau BASIC. That's becoming a much better test suite than artificial tests because every missing feature or subtly wrong behaviour eventually gets exposed by an actual program. The project is deliberately small. The UEFI version greets you with: "I make myself rich by making my wants few." — Henry David Thoreau followed, somewhat ironically on a modern PC, by something like: 27,340,685,312 bytes free I'd be interested in hearing from people who wrote BASIC in the 80s/90s, interpreter/compiler people, and anyone sufficiently strange to still find a Ready prompt inviting. https://bit.ly/4it2t4R August 23, 2026 at 06:48PM

Show HN: Pyrift – static analyser for silent Python/PyPy behaviour differences https://bit.ly/3ST2S6f

Show HN: Pyrift – static analyser for silent Python/PyPy behaviour differences https://bit.ly/3UCMes5 August 25, 2026 at 01:47AM

Show HN: Flostep – Diagrams people can actually walkthrough https://bit.ly/46msziE

Show HN: Flostep – Diagrams people can actually walkthrough https://bit.ly/3UfYfng August 24, 2026 at 11:45PM

Show HN: Neostatic, a tiny site/blog generator for neocities https://bit.ly/4gnrID6

Show HN: Neostatic, a tiny site/blog generator for neocities https://bit.ly/4guWCta August 24, 2026 at 12:51AM

Show HN: Vidmoat – My Super Fantastic AI Native Video Editor (MCP, Web) https://bit.ly/46icrid

Show HN: Vidmoat – My Super Fantastic AI Native Video Editor (MCP, Web) Hi there, I'm working on Vidmoat. A couple of months ago I wanted to venture into making videos. The only issue was that I suck at editing them. No amount of YouTube could hide the fact. But here's what I don't suck at. Building new stuff. I've also marveled at so much product demo videos and never quite figured out how to make my own (or pay for a professional to make one). So I made Vidmoat, my own personal AI native editor which provides an interface AI can drive. Works for both professionals and non-professionals. I mostly use mine via Claude MCP to handle edits for me and make entirely new clips. The exciting thing is that it's not limited to the provided tools. I built a 3d plugin so allow me animate a mascot i was building in 3D. I'd appreciate and love any feedback I can get on this https://bit.ly/3SQaera August 23, 2026 at 10:56PM

Show HN: Own the Day – Own a page for 24 hours, starting at $1 https://bit.ly/4wOlylM

Show HN: Own the Day – Own a page for 24 hours, starting at $1 https://bit.ly/45Jhb0g August 24, 2026 at 12:31AM

Show HN: CtrlTool – 132 free online tools for developers and everyday tasks https://bit.ly/3UaDSrz

Show HN: CtrlTool – 132 free online tools for developers and everyday tasks Hey HN, I built CtrlTool because I kept needing small tools for random things and didn't want to install something or sign up for another website. It currently has 132 tools for things like JSON, JWT, Base64, URLs, text, hashes, PDFs, SEO, converters, generators, and other everyday stuff. The main thing I tried to focus on is making the tools fast and simple. For tools where it makes sense, everything runs locally in the browser so the data doesn't need to be uploaded to a server. It's still very new, so I'm mostly looking for feedback on the UX, which tools are actually useful, and what you think is missing. https://bit.ly/4gJaKAp Would appreciate any feedback. https://bit.ly/4gJaKAp August 23, 2026 at 02:44AM

Show HN: EchoVault, an app that interviews you and answers as you after death https://bit.ly/45GhFnS

Show HN: EchoVault, an app that interviews you and answers as you after death https://apple.co/45CoBCn August 22, 2026 at 01:14AM

Show HN: OzBrain, a shared brain for knowledge between agents and your team https://bit.ly/3ULYK8E

Show HN: OzBrain, a shared brain for knowledge between agents and your team I think agent-first chat interfaces will be a primary software modality and busy dashboard/UI will go away. I’m not sure who exactly wins it, but I want my knowledge to grow/go with me. A lot of the “knowledge” ie research, analysis, reasoning will be done by agents as the primary user. Our current notes tools & tasks management systems were built for humans… I don’t care what the 17th thing on my bug backlog is. I want to conduct agents that can execute for me and do great work. What I built OzBrain to do: + Create a central place for agent reasoned knowledge to live + Be agnostic about what apps/agents connect to it + Capture everything and track it so I can audit it + Enable teams, collaborators or partners to share brains + Handle conflicts so many agents in the same article doesn’t blow up + Refactor knowledge into more token friendly chunks and map the index well + Close the knowledge loop so new thinking supersedes old thinking across the corpus. Don’t erase, depreciate and link + Keep user data safe and secure ++ Be easy enough to use that you don’t have to have any technical knowledge Some among us will always build their own custom solutions, but there are millions of tech professionals and small business owners that will use agents heavily and need a solution. So I’m trying to build that. Isn’t this like gBrain? Yes, similar. I think it’s like AWS vs Vercel. AWS is very powerful, configurable, and useful if you’re technical and want to invest the time into really fine tuning your system… but if you just want your web deploy/hosting to just work and be easy to deal with you use Vercel. // WHY I MADE IT I’ve been enjoying getting back to my technical roots, as I lost my coding skills more than a decade ago, but with AI I can focus on the system and the product in partnership with agent coding workflows. I recently built a Voice AI for older people. To build it I created an agentic engineering workflow (feel free to rip that up as I’m always looking to improve systems: https://bit.ly/3UsGC3y ) My approach with coding agents is trust but verify, and I’m trying to replace the parts where a human would review with an adversarial or specialized agent who would give a better answer/review. I have workflows that will go high level task to shipped PR running in Claude cloud sessions. I use Claude Code locally and Cursor when I want a tighter loop on doing visual work like UI or layout. And Codex to either load balance usage for TokenThriffting or when I want a different llm to think thru something. It was a pain in the ass passing .md files around and keep track of which version was the most recent, so I built a hosted .md storage right in Supabase and any of my agents already have Supabase access. This let me build a solid, scalable, secure voice AI from my phone at the gym. All my agents have access to our knowledge, can write to it, update and refer to it as we build and improve the product and the systems we use. Out of 75 founder friends I asked about how they manage shared knowledge, 26 built their own custom knowledge systems… Obsidian vaults with 7k files synced through a VPS, markdown repos behind their own MCP servers, cron jobs stitching Supabase to a skills file… each a different Frankenstein they have to maintain. 32 said they felt the pain of moving static files around but didn’t have any solution for it. So I rebuilt my brain better and used it to build it. // HOW YOU CAN HELP Would love to have you try it out. The maintenance loop is still in alpha so not running it on customer data yet. If you built your own brain I’d love to hear how you did it. What criteria was most important for you in its design & function. If you are tired of shuffling .md files around I’d love to have you try out OzBrain and to give feedback, just ask your agent to put it in the shared bugs & features brain! Cheers! Bubs.co https://bit.ly/45HnYY9 August 22, 2026 at 12:09AM

Show HN: Steppewm stacking Wayland window manager https://bit.ly/4qvvzm7

Show HN: Steppewm stacking Wayland window manager a thing I made why? there's just nothing like icewm in the wayland space. there's labwc but it's jank if you simply want the icewm experience with a taskbar and DE-ish experience. plus, there's a converter for icewm themes. and a good taskbar. https://bit.ly/4wIZ8Cq August 21, 2026 at 03:12AM

Show HN: ParqDB – Vector search in the browser from Parquet over HTTP" https://bit.ly/4grZtDm

Show HN: ParqDB – Vector search in the browser from Parquet over HTTP" https://bit.ly/3SqVlLR August 21, 2026 at 01:13AM

Show HN: luoluoAI – OpenAI-compatible and Claude Messages API gateway https://bit.ly/4xeFBe4

Show HN: luoluoAI – OpenAI-compatible and Claude Messages API gateway https://bit.ly/46chqAV August 21, 2026 at 12:27AM

Show HN: Ez – a macOS command runner that flags when a command gets slower https://bit.ly/4xRWN96

Show HN: Ez – a macOS command runner that flags when a command gets slower https://bit.ly/3OgC5hF August 20, 2026 at 12:19PM

Show HN: Linux and iPhone Continuity (iMessage / SMS) https://bit.ly/4wGX6mi

Show HN: Linux and iPhone Continuity (iMessage / SMS) After switching to 100% Linux a couple of years ago there was basically only one thing I missed about macOS and that was what Apple calls "Continuity". It's where you get texts, notifications, clipboard sync, file transfer (to/from) the iPhone from the Mac desktop. Especially that thing where OTP codes via text autofilled into the browser form I was waiting on. It took about 4 months of work: - reverse-engineering Apple/iOS Bluetooth behavior - MAP / OBEX - Bluetooth LE + Wi-Fi working together - iMessage through the iPhone's own cellular/iMessage stack - iOS app, Linux daemon, GTK app, Thunderbird/Firefox extension - no Mac involved But it is now something I'd love to show people. Contributions/bugs/feedback welcome! https://bit.ly/4wFJzvb August 20, 2026 at 05:53AM

Show HN: Mail client optimized for self-hosted email across multiple domains https://bit.ly/4qs7GvS

Show HN: Mail client optimized for self-hosted email across multiple domains As someone with a clean IP range and ADHD, I manage my inbox by splitting across a variety of accounts for a variety of domains. I’ve never really found a client that scratches all my itches, so I spent some time making one and it’s now become my daily driver. It’s optimised to be visually simple and highly configurable for things like colour, folders/subfolders, sorting and tweaking the search query function to better match what you search for often. There’s also some little nice-to-haves like a purpose-built PWA, bulk domain onboarding, MCP and dark mode. It’s fully self-hostable, open source and free of any AI bloat/VC fodder. Not trying to sell anything but rather make something un-shitified and simple to use, would love some feedback if you’ve given it a try! :~) https://bit.ly/4xdIHPw August 20, 2026 at 02:55AM

Show HN: A new way to read books, magnifying in and out https://bit.ly/4quXtyL

Show HN: A new way to read books, magnifying in and out After watching The Odyssey, I thought it would be cool to check out some scenes from the source in detail, but I don't have time to read the whole book. So I came up with a sort of zoom/microscope, that allows to see the whole book at a glance and then zoom in (by pinching) on the part I'm interested in. I can do so down to the actual source text and get the authentic feel the author intended, at the same time I better understand where am I in the text and also the character and places are clickable so I can quickly orient myself on the context. Moreover each character has relationships listed and a map of relationships can be opened from there https://bit.ly/4qthZzF https://bit.ly/4qtw1Bq August 19, 2026 at 11:21PM

Show HN: Draw.city – geography game where you circle the target population [US] https://bit.ly/4gfdV1d

Show HN: Draw.city – geography game where you circle the target population [US] The core idea is, you draw a circle on a satellite view map and it tells you the population inside + more info. The home page is a daily challenge, I've backfilled some "past challenges" so there's more than just the past couple of days to play, and there is also a free-draw mode that tells you population + some census demographic info & points-of-interest data from OpenStreetMap. In most cases, the data comes from taking the census blocks w/ centroids contained in your circle and summing their population. Demographic info is slightly more complex as it's not sourced on blocks, so we allocate population-weighted fractions of a source territory's published census values into the drawn territory. Happy to answer any questions about the data or the technical side. The game/app only covers US areas at the moment, I'd like to add international data in the future! I am re-submitting this as a proper "Show HN", as I left the 'Show HN' text out of the title the last time I submitted https://bit.ly/46dVKUY August 18, 2026 at 11:14PM

Show HN: Roost – top for your Claude Code sessions https://bit.ly/468xG5U

Show HN: Roost – top for your Claude Code sessions https://bit.ly/4qvbhte August 18, 2026 at 11:10PM