The best Hacker News stories from Show from the past day
Latest posts:
Show HN: OpenWorkers – Self-hosted Cloudflare workers in Rust
I've been working on this for some time now, starting with vm2, then deno-core for 2 years, and recently rewrote it on rusty_v8 with Claude's help.<p>OpenWorkers lets you run untrusted JS in V8 isolates on your own infrastructure. Same DX as Cloudflare Workers, no vendor lock-in.<p>What works today: fetch, KV, Postgres bindings, S3/R2, cron scheduling, crypto.subtle.<p>Self-hosting is a single docker-compose file + Postgres.<p>Would love feedback on the architecture and what feature you'd want next.
Show HN: OpenWorkers – Self-hosted Cloudflare workers in Rust
I've been working on this for some time now, starting with vm2, then deno-core for 2 years, and recently rewrote it on rusty_v8 with Claude's help.<p>OpenWorkers lets you run untrusted JS in V8 isolates on your own infrastructure. Same DX as Cloudflare Workers, no vendor lock-in.<p>What works today: fetch, KV, Postgres bindings, S3/R2, cron scheduling, crypto.subtle.<p>Self-hosting is a single docker-compose file + Postgres.<p>Would love feedback on the architecture and what feature you'd want next.
Show HN: OpenWorkers – Self-hosted Cloudflare workers in Rust
I've been working on this for some time now, starting with vm2, then deno-core for 2 years, and recently rewrote it on rusty_v8 with Claude's help.<p>OpenWorkers lets you run untrusted JS in V8 isolates on your own infrastructure. Same DX as Cloudflare Workers, no vendor lock-in.<p>What works today: fetch, KV, Postgres bindings, S3/R2, cron scheduling, crypto.subtle.<p>Self-hosting is a single docker-compose file + Postgres.<p>Would love feedback on the architecture and what feature you'd want next.
Show HN: LoongArch Userspace Emulator
<a href="https://fwsgonzo.medium.com/notes-on-libloong-loongarch-64-bit-emulation-515ea6610cad" rel="nofollow">https://fwsgonzo.medium.com/notes-on-libloong-loongarch-64-b...</a>
Show HN: LoongArch Userspace Emulator
<a href="https://fwsgonzo.medium.com/notes-on-libloong-loongarch-64-bit-emulation-515ea6610cad" rel="nofollow">https://fwsgonzo.medium.com/notes-on-libloong-loongarch-64-b...</a>
Show HN: Frockly – A visual editor for understanding complex Excel formulas
I built a visual editor that represents Excel formulas as blocks,
making it easier to inspect, refactor, and reason about complex formulas structurally.
Frockly is not an Excel replacement.
It focuses on understanding and refactoring formulas before bringing them back to Excel.
Demo: <a href="https://ryuu12358.github.io/Frockly/" rel="nofollow">https://ryuu12358.github.io/Frockly/</a>
GitHub: <a href="https://github.com/ryuu12358/Frockly" rel="nofollow">https://github.com/ryuu12358/Frockly</a>
Write-up: <a href="https://note.com/ryuu12358/n/naa65d9d5facd" rel="nofollow">https://note.com/ryuu12358/n/naa65d9d5facd</a> （Japanese）
Show HN: Frockly – A visual editor for understanding complex Excel formulas
I built a visual editor that represents Excel formulas as blocks,
making it easier to inspect, refactor, and reason about complex formulas structurally.
Frockly is not an Excel replacement.
It focuses on understanding and refactoring formulas before bringing them back to Excel.
Demo: <a href="https://ryuu12358.github.io/Frockly/" rel="nofollow">https://ryuu12358.github.io/Frockly/</a>
GitHub: <a href="https://github.com/ryuu12358/Frockly" rel="nofollow">https://github.com/ryuu12358/Frockly</a>
Write-up: <a href="https://note.com/ryuu12358/n/naa65d9d5facd" rel="nofollow">https://note.com/ryuu12358/n/naa65d9d5facd</a> （Japanese）
Show HN: I built a universal clipboard that syncs realtime on multiple devices
I’m Gopal, the guy behind QuickClip.<p>I built this out of pure frustration. Copying items between my phone and laptop was very painful. Sending notes and links on WhatsApp. Saving random drafts I’d forget about. It was total waste of time.<p>So I made QuickClip for myself first. A dead simple way to move text, links and images between devices instantly. No setup drama. No thinking. Fully encrypted<p>I use it every day. Shipping it publicly now to see if anyone else has the same problem.<p>Would honestly love to hear, how you move stuff between devices today, what’s broken or slow and what would make this actually useful for you<p>Happy to answer anything and take suggestions. Thanks for checking it out.
Show HN: Use Claude Code to Query 600 GB Indexes over Hacker News, ArXiv, etc.
Paste in my prompt to Claude Code with an embedded API key for accessing my public readonly SQL+vector database, and you have a state-of-the-art research tool over Hacker News, arXiv, LessWrong, and dozens of other high-quality public commons sites. Claude whips up the monster SQL queries that safely run on my machine, to answer your most nuanced questions.<p>There's also an Alerts functionality, where you can just ask Claude to submit a SQL query as an alert, and you'll be emailed when the ultra nuanced criteria is met (and the output changes). Like I want to know when somebody posts about "estrogen" in a psychoactive context, or enough biology metaphors when talking about building infrastructure.<p>Currently have embedded:
posts: 1.4M / 4.6M
comments: 15.6M / 38M
That's with Voyage-3.5-lite. And you can do amazing compositional vector search, like search @FTX_crisis - (@guilt_tone - @guilt_topic) to find writing that was about the FTX crisis and distinctly without guilty tones, but that can mention "guilt".<p>I can embed everything and all the other sources for cheap, I just literally don't have the money.
Show HN: Use Claude Code to Query 600 GB Indexes over Hacker News, ArXiv, etc.
Paste in my prompt to Claude Code with an embedded API key for accessing my public readonly SQL+vector database, and you have a state-of-the-art research tool over Hacker News, arXiv, LessWrong, and dozens of other high-quality public commons sites. Claude whips up the monster SQL queries that safely run on my machine, to answer your most nuanced questions.<p>There's also an Alerts functionality, where you can just ask Claude to submit a SQL query as an alert, and you'll be emailed when the ultra nuanced criteria is met (and the output changes). Like I want to know when somebody posts about "estrogen" in a psychoactive context, or enough biology metaphors when talking about building infrastructure.<p>Currently have embedded:
posts: 1.4M / 4.6M
comments: 15.6M / 38M
That's with Voyage-3.5-lite. And you can do amazing compositional vector search, like search @FTX_crisis - (@guilt_tone - @guilt_topic) to find writing that was about the FTX crisis and distinctly without guilty tones, but that can mention "guilt".<p>I can embed everything and all the other sources for cheap, I just literally don't have the money.
Show HN: Use Claude Code to Query 600 GB Indexes over Hacker News, ArXiv, etc.
Paste in my prompt to Claude Code with an embedded API key for accessing my public readonly SQL+vector database, and you have a state-of-the-art research tool over Hacker News, arXiv, LessWrong, and dozens of other high-quality public commons sites. Claude whips up the monster SQL queries that safely run on my machine, to answer your most nuanced questions.<p>There's also an Alerts functionality, where you can just ask Claude to submit a SQL query as an alert, and you'll be emailed when the ultra nuanced criteria is met (and the output changes). Like I want to know when somebody posts about "estrogen" in a psychoactive context, or enough biology metaphors when talking about building infrastructure.<p>Currently have embedded:
posts: 1.4M / 4.6M
comments: 15.6M / 38M
That's with Voyage-3.5-lite. And you can do amazing compositional vector search, like search @FTX_crisis - (@guilt_tone - @guilt_topic) to find writing that was about the FTX crisis and distinctly without guilty tones, but that can mention "guilt".<p>I can embed everything and all the other sources for cheap, I just literally don't have the money.
Show HN: Use Claude Code to Query 600 GB Indexes over Hacker News, ArXiv, etc.
Paste in my prompt to Claude Code with an embedded API key for accessing my public readonly SQL+vector database, and you have a state-of-the-art research tool over Hacker News, arXiv, LessWrong, and dozens of other high-quality public commons sites. Claude whips up the monster SQL queries that safely run on my machine, to answer your most nuanced questions.<p>There's also an Alerts functionality, where you can just ask Claude to submit a SQL query as an alert, and you'll be emailed when the ultra nuanced criteria is met (and the output changes). Like I want to know when somebody posts about "estrogen" in a psychoactive context, or enough biology metaphors when talking about building infrastructure.<p>Currently have embedded:
posts: 1.4M / 4.6M
comments: 15.6M / 38M
That's with Voyage-3.5-lite. And you can do amazing compositional vector search, like search @FTX_crisis - (@guilt_tone - @guilt_topic) to find writing that was about the FTX crisis and distinctly without guilty tones, but that can mention "guilt".<p>I can embed everything and all the other sources for cheap, I just literally don't have the money.
Show HN: A Claude Code plugin that catch destructive Git and filesystem commands
Show HN: A Claude Code plugin that catch destructive Git and filesystem commands
Show HN: One clean, developer-focused page for every Unicode symbol
I’m building a Unicode reference where each symbol has its own dev-friendly page with all relevant encodings.<p>Example:
[<a href="https://fontgenerator.design/symbol/almost-equal-to" rel="nofollow">https://fontgenerator.design/symbol/almost-equal-to</a>](<a href="https://fontgenerator.design/symbol/almost-equal-to" rel="nofollow">https://fontgenerator.design/symbol/almost-equal-to</a>)<p>Includes Unicode, HTML, CSS, JS, UTF-8/16 bytes, URL encoding, and usage examples.<p>The same structure is used across thousands of symbols (math, arrows, currency, tech/UI, punctuation).<p>Built because existing references are fragmented.
Feedback welcome.
Show HN: One clean, developer-focused page for every Unicode symbol
I’m building a Unicode reference where each symbol has its own dev-friendly page with all relevant encodings.<p>Example:
[<a href="https://fontgenerator.design/symbol/almost-equal-to" rel="nofollow">https://fontgenerator.design/symbol/almost-equal-to</a>](<a href="https://fontgenerator.design/symbol/almost-equal-to" rel="nofollow">https://fontgenerator.design/symbol/almost-equal-to</a>)<p>Includes Unicode, HTML, CSS, JS, UTF-8/16 bytes, URL encoding, and usage examples.<p>The same structure is used across thousands of symbols (math, arrows, currency, tech/UI, punctuation).<p>Built because existing references are fragmented.
Feedback welcome.
Show HN: One clean, developer-focused page for every Unicode symbol
I’m building a Unicode reference where each symbol has its own dev-friendly page with all relevant encodings.<p>Example:
[<a href="https://fontgenerator.design/symbol/almost-equal-to" rel="nofollow">https://fontgenerator.design/symbol/almost-equal-to</a>](<a href="https://fontgenerator.design/symbol/almost-equal-to" rel="nofollow">https://fontgenerator.design/symbol/almost-equal-to</a>)<p>Includes Unicode, HTML, CSS, JS, UTF-8/16 bytes, URL encoding, and usage examples.<p>The same structure is used across thousands of symbols (math, arrows, currency, tech/UI, punctuation).<p>Built because existing references are fragmented.
Feedback welcome.
Show HN: 22 GB of Hacker News in SQLite
Community, All the HN belong to you. This is an archive of hacker news that fits in your browser. When I made HN Made of Primes I realized I could probably do this offline sqlite/wasm thing with the whole GBs of archive. The whole dataset. So I tried it, and this is it. Have Hacker News on your device.<p>Go to this repo (<a href="https://github.com/DOSAYGO-STUDIO/HackerBook" rel="nofollow">https://github.com/DOSAYGO-STUDIO/HackerBook</a>): you can download it. Big Query -> ETL -> npx serve docs - that's it. 20 years of HN arguments and beauty, can be yours forever. So they'll never die. Ever. It's the unkillable static archive of HN and it's your hands. That's my Year End gift to you all. Thank you for a wonderful year, have happy and wonderful 2026. make something of it.
Show HN: 22 GB of Hacker News in SQLite
Community, All the HN belong to you. This is an archive of hacker news that fits in your browser. When I made HN Made of Primes I realized I could probably do this offline sqlite/wasm thing with the whole GBs of archive. The whole dataset. So I tried it, and this is it. Have Hacker News on your device.<p>Go to this repo (<a href="https://github.com/DOSAYGO-STUDIO/HackerBook" rel="nofollow">https://github.com/DOSAYGO-STUDIO/HackerBook</a>): you can download it. Big Query -> ETL -> npx serve docs - that's it. 20 years of HN arguments and beauty, can be yours forever. So they'll never die. Ever. It's the unkillable static archive of HN and it's your hands. That's my Year End gift to you all. Thank you for a wonderful year, have happy and wonderful 2026. make something of it.
Show HN: 22 GB of Hacker News in SQLite
Community, All the HN belong to you. This is an archive of hacker news that fits in your browser. When I made HN Made of Primes I realized I could probably do this offline sqlite/wasm thing with the whole GBs of archive. The whole dataset. So I tried it, and this is it. Have Hacker News on your device.<p>Go to this repo (<a href="https://github.com/DOSAYGO-STUDIO/HackerBook" rel="nofollow">https://github.com/DOSAYGO-STUDIO/HackerBook</a>): you can download it. Big Query -> ETL -> npx serve docs - that's it. 20 years of HN arguments and beauty, can be yours forever. So they'll never die. Ever. It's the unkillable static archive of HN and it's your hands. That's my Year End gift to you all. Thank you for a wonderful year, have happy and wonderful 2026. make something of it.