The best Hacker News stories from Show from the past day
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Show HN: Stagewise (YC S25) – Front end coding agent for existing codebases
Hey HN, we're Julian and Glenn, and we're building stagewise (<a href="https://stagewise.io">https://stagewise.io</a>), a frontend coding agent that lives inside your browser on localhost and operates on local codebases.<p>You can spawn the agent into locally running web apps in dev mode with `npx stagewise` from the project root. The agent lets you then click on HTML Elements in your app, enter prompts like 'increase the height here' and will implement the changes in your source code.<p>Before stagewise, we were building a vertical SaaS for logistics from scratch and loved using prototyping tools like v0 or lovable to get to the first version. But when switching from v0/ lovable to Cursor for local development, we felt like the frontend magic was gone. So, we decided to build stagewise to bring that same magic to local development.<p>The first version of stagewise just forwarded a prompt with browser context to existing IDEs and agents (Cursor, Cline, ..) and went viral on X after we open sourced it. However, the APIs of existing coding agents were very limiting, so we figured that building our own agent would unlock the full potential of stagewise.<p>Here's how it works:
When you run `npx stagewise`, our cli proxies your running web application in dev mode and injects a toolbar containing the coding agent on top of it. Each prompt you send will be enriched with browser context and sent to our cli, which will call our backend and modify the source code of your local codebase accordingly.<p>Here's a demo of our agent changing the login UI of Cal.com, a popular open-source meeting scheduling app: <a href="https://www.youtube.com/watch?v=BkDcAozK9L4" rel="nofollow">https://www.youtube.com/watch?v=BkDcAozK9L4</a>.<p>So far, we've seen great adoption from non-technical users who wanted to continue building their lovable prototype locally. We personally use the agent almost daily to make changes to our landing page and to build the UI of new features on our console (<a href="https://console.stagewise.io">https://console.stagewise.io</a>).<p>If you have an app running in dev mode, simply `cd` into the app directory and run `npx stagewise` - the agent should appear, ready to play with.<p>We're very excited to hear your feedback!
Show HN: Stagewise (YC S25) – Front end coding agent for existing codebases
Hey HN, we're Julian and Glenn, and we're building stagewise (<a href="https://stagewise.io">https://stagewise.io</a>), a frontend coding agent that lives inside your browser on localhost and operates on local codebases.<p>You can spawn the agent into locally running web apps in dev mode with `npx stagewise` from the project root. The agent lets you then click on HTML Elements in your app, enter prompts like 'increase the height here' and will implement the changes in your source code.<p>Before stagewise, we were building a vertical SaaS for logistics from scratch and loved using prototyping tools like v0 or lovable to get to the first version. But when switching from v0/ lovable to Cursor for local development, we felt like the frontend magic was gone. So, we decided to build stagewise to bring that same magic to local development.<p>The first version of stagewise just forwarded a prompt with browser context to existing IDEs and agents (Cursor, Cline, ..) and went viral on X after we open sourced it. However, the APIs of existing coding agents were very limiting, so we figured that building our own agent would unlock the full potential of stagewise.<p>Here's how it works:
When you run `npx stagewise`, our cli proxies your running web application in dev mode and injects a toolbar containing the coding agent on top of it. Each prompt you send will be enriched with browser context and sent to our cli, which will call our backend and modify the source code of your local codebase accordingly.<p>Here's a demo of our agent changing the login UI of Cal.com, a popular open-source meeting scheduling app: <a href="https://www.youtube.com/watch?v=BkDcAozK9L4" rel="nofollow">https://www.youtube.com/watch?v=BkDcAozK9L4</a>.<p>So far, we've seen great adoption from non-technical users who wanted to continue building their lovable prototype locally. We personally use the agent almost daily to make changes to our landing page and to build the UI of new features on our console (<a href="https://console.stagewise.io">https://console.stagewise.io</a>).<p>If you have an app running in dev mode, simply `cd` into the app directory and run `npx stagewise` - the agent should appear, ready to play with.<p>We're very excited to hear your feedback!
Show HN: Whittle – A shrinking word game
Whittle is a small word game I've been working on. Each phrase must be whittled down by one letter (or space) each turn. The remaining phrase must still consist of valid words. That's it! There's a daily puzzle, as well as an archive of old puzzles.<p>The idea for the game came to me in a dream (really) and I built the puzzle generator with my partner, who's also a software engineer. It's a labor of love! Any feedback or suggestions are welcome. Thanks for playing!
Show HN: Whittle – A shrinking word game
Whittle is a small word game I've been working on. Each phrase must be whittled down by one letter (or space) each turn. The remaining phrase must still consist of valid words. That's it! There's a daily puzzle, as well as an archive of old puzzles.<p>The idea for the game came to me in a dream (really) and I built the puzzle generator with my partner, who's also a software engineer. It's a labor of love! Any feedback or suggestions are welcome. Thanks for playing!
Show HN: Whittle – A shrinking word game
Whittle is a small word game I've been working on. Each phrase must be whittled down by one letter (or space) each turn. The remaining phrase must still consist of valid words. That's it! There's a daily puzzle, as well as an archive of old puzzles.<p>The idea for the game came to me in a dream (really) and I built the puzzle generator with my partner, who's also a software engineer. It's a labor of love! Any feedback or suggestions are welcome. Thanks for playing!
Show HN: Whittle – A shrinking word game
Whittle is a small word game I've been working on. Each phrase must be whittled down by one letter (or space) each turn. The remaining phrase must still consist of valid words. That's it! There's a daily puzzle, as well as an archive of old puzzles.<p>The idea for the game came to me in a dream (really) and I built the puzzle generator with my partner, who's also a software engineer. It's a labor of love! Any feedback or suggestions are welcome. Thanks for playing!
Show HN: I've been building an ERP for manufacturing for the last 3 years
Show HN: I've been building an ERP for manufacturing for the last 3 years
Show HN: Spatial Web Browser Engine
Show HN: Schematra – Sinatra-inspired minimal web framework for Chicken Scheme
I started this project a couple of weeks ago because I was stuck on my side project and needed some motivation. For a very long time I wanted to get back to do something useful in lisp/scheme, did a quick research and settled on CHICKEN mostly because it's relatively well maintained, fast enough, it's extremely easy to build/install and very easy to write interop to pretty much any library.<p>Most of the projects that I've written on the side have been using some combination of Sinatra + Sequel + Postgres/Redis/Something else + HTMX. I love the simplicity of Sinatra's API so I decided to focus on trying to have a similar experience but in scheme, trying to make it ergonomic for a scheme dev (that part might not be there yet since I'm not an experienced scheme dev).<p>The most fun part was the dev cycle: Emacs + NREPL + Aider (as a code reviewer & rubber ducky. For codegen it's mostly annoying but works great for documentation & refactoring).<p>I hope to add full SSE & WebSocket support some time this week. Anyway, hopefully this is interesting to some of you and might be a source of fun :)
Show HN: Sidequest.js – Background jobs for Node.js using your database
Hey HN,<p>I'm the maintainer of node-cron (5M+ downloads/month), and I recently built Sidequest.js, a background job runner for Node.js inspired by Oban (Elixir) and Sidekiq (Rails).<p>It solves some common problems I saw with libraries like node-cron:<p>- Jobs don’t block your API: they run in isolated worker threads<p>- No Redis or vendor lock-in: use Postgres, MySQL, SQLite, or MongoDB<p>- Supports retries, uniqueness, concurrency, snoozing, prioritization<p>- Comes with a CLI and a simple dashboard<p>- Works great in monoliths and doesn’t require extra infra<p>Quick start (no signup needed): <a href="https://docs.sidequestjs.com/quick-start" rel="nofollow">https://docs.sidequestjs.com/quick-start</a><p>GitHub: <a href="https://github.com/sidequestjs/sidequest" rel="nofollow">https://github.com/sidequestjs/sidequest</a><p>Would love feedback or feature suggestions. Happy to answer any questions here!
Show HN: Sidequest.js – Background jobs for Node.js using your database
Hey HN,<p>I'm the maintainer of node-cron (5M+ downloads/month), and I recently built Sidequest.js, a background job runner for Node.js inspired by Oban (Elixir) and Sidekiq (Rails).<p>It solves some common problems I saw with libraries like node-cron:<p>- Jobs don’t block your API: they run in isolated worker threads<p>- No Redis or vendor lock-in: use Postgres, MySQL, SQLite, or MongoDB<p>- Supports retries, uniqueness, concurrency, snoozing, prioritization<p>- Comes with a CLI and a simple dashboard<p>- Works great in monoliths and doesn’t require extra infra<p>Quick start (no signup needed): <a href="https://docs.sidequestjs.com/quick-start" rel="nofollow">https://docs.sidequestjs.com/quick-start</a><p>GitHub: <a href="https://github.com/sidequestjs/sidequest" rel="nofollow">https://github.com/sidequestjs/sidequest</a><p>Would love feedback or feature suggestions. Happy to answer any questions here!
Show HN: Sidequest.js – Background jobs for Node.js using your database
Hey HN,<p>I'm the maintainer of node-cron (5M+ downloads/month), and I recently built Sidequest.js, a background job runner for Node.js inspired by Oban (Elixir) and Sidekiq (Rails).<p>It solves some common problems I saw with libraries like node-cron:<p>- Jobs don’t block your API: they run in isolated worker threads<p>- No Redis or vendor lock-in: use Postgres, MySQL, SQLite, or MongoDB<p>- Supports retries, uniqueness, concurrency, snoozing, prioritization<p>- Comes with a CLI and a simple dashboard<p>- Works great in monoliths and doesn’t require extra infra<p>Quick start (no signup needed): <a href="https://docs.sidequestjs.com/quick-start" rel="nofollow">https://docs.sidequestjs.com/quick-start</a><p>GitHub: <a href="https://github.com/sidequestjs/sidequest" rel="nofollow">https://github.com/sidequestjs/sidequest</a><p>Would love feedback or feature suggestions. Happy to answer any questions here!
Show HN: Mathpad – Physical keypad for typing math symbols
Here's something different than your usual fare: A physical keypad that lets you directly type math!<p>Ever tried typing mathematical equations in your code IDE, email, or on Slack? You might know it can be tricky. Mathpad solves this with dedicated keys for Greek letters, calculus symbols, and more. Press the ∫ key and get ∫, in any application that accepts text. It uses Unicode composition, so it works everywhere: Browsers, chat apps, code editors, Word, you name it. Basically, anywhere you can type text, Mathpad lets you type mathematics.<p>I built Mathpad after getting frustrated with the friction of typing equations in e.g. Word, and what a pain in the ass it was to find the specific symbols I needed. I assumed that a product like Mathpad already existed, but that was not true and I had to build it myself.<p>It turned out to be pretty useful! Three years of solo development later, I'm launching on Crowd Supply. One of the trickiest parts of this project was finding someone who could manufacture custom keycaps with mathematical symbols. Shoutout to Loic at 3dkeycap.com for making it possible!<p>Fully open source (hardware + software): <a href="https://github.com/Summa-Cogni/Mathpad">https://github.com/Summa-Cogni/Mathpad</a>
Campaign: <a href="https://www.crowdsupply.com/summa-cogni/mathpad" rel="nofollow">https://www.crowdsupply.com/summa-cogni/mathpad</a>
Project log: <a href="https://hackaday.io/project/186205-mathpad-the-math-keypad" rel="nofollow">https://hackaday.io/project/186205-mathpad-the-math-keypad</a>
Show HN: Mathpad – Physical keypad for typing math symbols
Here's something different than your usual fare: A physical keypad that lets you directly type math!<p>Ever tried typing mathematical equations in your code IDE, email, or on Slack? You might know it can be tricky. Mathpad solves this with dedicated keys for Greek letters, calculus symbols, and more. Press the ∫ key and get ∫, in any application that accepts text. It uses Unicode composition, so it works everywhere: Browsers, chat apps, code editors, Word, you name it. Basically, anywhere you can type text, Mathpad lets you type mathematics.<p>I built Mathpad after getting frustrated with the friction of typing equations in e.g. Word, and what a pain in the ass it was to find the specific symbols I needed. I assumed that a product like Mathpad already existed, but that was not true and I had to build it myself.<p>It turned out to be pretty useful! Three years of solo development later, I'm launching on Crowd Supply. One of the trickiest parts of this project was finding someone who could manufacture custom keycaps with mathematical symbols. Shoutout to Loic at 3dkeycap.com for making it possible!<p>Fully open source (hardware + software): <a href="https://github.com/Summa-Cogni/Mathpad">https://github.com/Summa-Cogni/Mathpad</a>
Campaign: <a href="https://www.crowdsupply.com/summa-cogni/mathpad" rel="nofollow">https://www.crowdsupply.com/summa-cogni/mathpad</a>
Project log: <a href="https://hackaday.io/project/186205-mathpad-the-math-keypad" rel="nofollow">https://hackaday.io/project/186205-mathpad-the-math-keypad</a>
Show HN: Mathpad – Physical keypad for typing math symbols
Here's something different than your usual fare: A physical keypad that lets you directly type math!<p>Ever tried typing mathematical equations in your code IDE, email, or on Slack? You might know it can be tricky. Mathpad solves this with dedicated keys for Greek letters, calculus symbols, and more. Press the ∫ key and get ∫, in any application that accepts text. It uses Unicode composition, so it works everywhere: Browsers, chat apps, code editors, Word, you name it. Basically, anywhere you can type text, Mathpad lets you type mathematics.<p>I built Mathpad after getting frustrated with the friction of typing equations in e.g. Word, and what a pain in the ass it was to find the specific symbols I needed. I assumed that a product like Mathpad already existed, but that was not true and I had to build it myself.<p>It turned out to be pretty useful! Three years of solo development later, I'm launching on Crowd Supply. One of the trickiest parts of this project was finding someone who could manufacture custom keycaps with mathematical symbols. Shoutout to Loic at 3dkeycap.com for making it possible!<p>Fully open source (hardware + software): <a href="https://github.com/Summa-Cogni/Mathpad">https://github.com/Summa-Cogni/Mathpad</a>
Campaign: <a href="https://www.crowdsupply.com/summa-cogni/mathpad" rel="nofollow">https://www.crowdsupply.com/summa-cogni/mathpad</a>
Project log: <a href="https://hackaday.io/project/186205-mathpad-the-math-keypad" rel="nofollow">https://hackaday.io/project/186205-mathpad-the-math-keypad</a>
Show HN: Tiny logic and number games I built for my kids
I’ve been building a few small games to help kids (and curious adults) build reasoning and logic skills. Think Word Ladder, Prime Hunter, Math Maze ,all in the browser, no installs. Would love feedback or suggestions for new types of puzzles
Show HN: Tiny logic and number games I built for my kids
I’ve been building a few small games to help kids (and curious adults) build reasoning and logic skills. Think Word Ladder, Prime Hunter, Math Maze ,all in the browser, no installs. Would love feedback or suggestions for new types of puzzles
Show HN: Tiny logic and number games I built for my kids
I’ve been building a few small games to help kids (and curious adults) build reasoning and logic skills. Think Word Ladder, Prime Hunter, Math Maze ,all in the browser, no installs. Would love feedback or suggestions for new types of puzzles
Show HN: Kimu – Open-Source Video Editor
I wanted a proper non-linear video editor built for the web. It always annoyed me how there are practically zero functioning web video editors. And here we are :)<p>Kimu can:
- Work with Video, Audio & Text.
- Supports Transitions.
- Non-Linear Video Editing with z-axis overlays.
- Split/trim
- Export
- A cute AI agent (coming soon!)<p>I'm in uni and I started this project out of sheer annoyance that there are zero good web video editors. It is open-source here (<a href="https://github.com/robinroy03/videoeditor" rel="nofollow">https://github.com/robinroy03/videoeditor</a>).<p>What do y'all think?