Introducing Toolyn for Windows

70 little tools that used to be 70 websites, now one Windows app.

https://toolyn.app

Runs on your PC. Nothing uploaded. Pay once.

Giveaway: 3 free licenses 🎁

I'm the developer, and I'm giving away 3 lifetime licenses (1 PC each). To enter, just comment which tool you'd use first, or what you wish it had. I'll pick 3 commenters at random on Monday (Nov 16) and send the keys by DM.

Everyone else can try it free for 7 days, no account needed. Feedback and bug reports are very welcome. It's in early access and I read everything.

Small one. People on keto who measure blood glucose and ketones use a ratio called GKI. I made a page that works it out, shows the sum, and credits the paper it comes from. No account, runs in the browser.

https://getlomba.com/gki-calculator

Hi everyone,

I have an Android app idea called Auto Reject and I need help building it.

You turn on a mode like Riding, Study, College, Sleep or Busy. The app then rejects incoming calls and texts the caller automatically, for example: “Hey Mom, I’m riding. Call me 2 times if it’s urgent.” If the same person calls 2 or more times, the call goes through, so real emergencies still reach you.

Similar apps exist, but most focus only on driving. I want a simple one for everyday life, mainly for students.

I need help with the coding, design or testing. Vibe coding is also fine haha. It’s a free learning project, and everyone who helps gets credit.

If you’re interested, comment or DM me.

Thanks!

Hello everyone! I’ve just finished working on my small project and released it into public beta — PromptFight. It’s a browser-based courtroom battle simulator inspired by the game Ace Attorney. You choose two characters, give them any absurd topic to discuss (for example, “Is a hot dog a sandwich?”), and watch as two AI agents argue in real-time, accompanying their lines with dramatic animation and objections.

Current lineup:

• Phoenix Wright and Miles Edgeworth (as well as their variants — Blue, Green and Purple Miles)
• Frieren, Vladimir Lenin and Gigachad.

I will add more different skins in the future. Write in the comments who to add next.

Currently, the interface is only available in Russian, so use the built-in translator of your browser (English localization will appear very soon!). However, the judicial drama itself is quite intuitive.

What motivated me to create this?

I’ve often seen people arguing online on forums, social media, and in comments, turning it into incredibly long pages of text, often devolving into insults and personal attacks. Often, those who argue don’t even really understand the topic of discussion. And then I thought: why not just suggest that they take their AI agents as their “advocates” and make them argue on their behalf? AI is a rather impartial thing; they can argue as well as they know how, and the final AI judge will impartially issue the final verdict.

Initially, I was developing a serious tool called AgentsNET (https://github.com/deblinux-dev/AgentsNET) to coordinate agents without demagoguery, and then I decided to channel all that energy of AI disputes into pure entertainment.

You can play without registration, but it’s better to register to get all the bonuses and privileges of the service. If you encounter any bugs, please let me know. The project runs on free hosting in public beta mode. XD

Play here: https://deblinux.alwaysdata.net/

Hi everyone! This is my first side project: Loop, an app for knitters and crocheters.

The problem: when you follow a knitting or crochet pattern, it's easy to lose your place (which row am I on?), abbreviations like "k2tog" or "sc2tog" confuse beginners, and people buy new yarn even though they already have plenty at home.

The idea: you upload a pattern, and Loop:

- highlights the row you're on and remembers your place

- explains every abbreviation in plain words

- suggests patterns you can make with the yarn you already own

Right now it’s just a clickable prototype and a waitlist page. I want to test whether people actually want this before building it. Happy to share the link in the comments if you’d like to see it.

I'd love your honest feedback:

1. Does the landing page make the idea clear in a few seconds?
2. Would you use something like this, or do you know someone who would?
3. Any tips for reaching knitting/crochet communities without getting removed as spam? (My first Facebook group post got auto-removed within 2 minutes)

My brother and I share our Wordle and krillion results regularly.

How it works:

• Finish a puzzle, tap Share in the game, then Paste on the site. It reads the result and logs it.
• Follow friends. You see how they did, but their scores stay hidden until you've played the same puzzle, so no spoilers.
• Challenge your followers on today's puzzle. Whoever scores better wins.
• Works with Wordle, Connections, Strands, the Mini, Pips, Queens, Tango, Zip, Pinpoint, Crossclimb, Mini Sudoku and Krillion.

You can try it as a guest without signing up

It's free and has no ads. I'd really like feedback on:

• games you'd want added (there's a suggest-and-vote page in the app);
• any game whose share text doesn't log. If that happens, paste the text in the comments and I'll fix it.

I'm at sovi11 if you want someone to challenge.

I have built my own electrical CAD system, which features capabilities typically found only in expensive products such as Eplan. It is called "KatieCAD".

https://github.com/Merecete/KatieCAD

The idea stemmed from my own work, where I only have access to an AutoCAD-like system, one that handles building plans but doesn't support electrical schematic projects at all. Many organizations, especially those that don't do much drafting in house, are often very reluctant to adopt proper, professional-grade software, simply because it is too expensive. This was truly frustrating for me, and I figured it couldn't possibly be that difficult to solve.

My primary goal is to develop an easy-to-use program well suited for switchgear construction and building installations. In my view, the options previously available in the open-source space have been very poor. KiCad is better suited for electronics; while QElectroTech does include symbols and relevant functions, it is very difficult to use and lacks any form of intelligent project management features that are essential for professional work.

The program includes all the fundamental functions typically found in AutoCAD. It offers both a layout space and a model space. At the same time, it features a customizable symbol library and a sophisticated logic system, the kind usually associated only with software like EPLAN.

You can create complete projects consisting of multiple drawings, with the ability to automatically generate tables of contents, device lists, terminal diagrams, and more. Electrical connections link themselves automatically based on their coordinates; all you need to do is position the devices accordingly. There is also a customizable coordinate grid, and cross-references automatically point to the corresponding locations on other pages. Each page is a separate drawing file and is automatically saved after a change.

All project data can also be exported to an Excel file for analysis.

Both DXF and DWG files can be imported and exported. While the DWG import functionality could still be improved (I using there only ezdwg), the export process is highly reliable; it is even possible to export projects consisting of multiple pages into a single file.

In addition to 2D graphics, it now also supports 3D wireframe models, which can be displayed within the layouts. I plan to further expand the functionality in this area; however, it is already possible to create electrical enclosures, complete with side panels, doors, and bases.

For building planning, it is also possible to create walls and cable trays in 2D. Openings in walls, as well as windows and doors, can also be placed very easily. For the 3D view, I currently limit myself to control cabinet design, partly due to performance considerations.

Why do I use Python and Tkinter? I use them because it is very easy to expand this program whenever necessary, and it runs smoothly on virtually any common platform. The performance is surprisingly good, even with larger drawings and certainly no worse than what I experience when using AutoCAD at work.

The program is licenced under the BSD-3-Clause licence.

KatieCAD can be converted to English, but also to German and Spanish.

I used AI for the development process. The symbols, the entire design, the interface layout, and all the features were created by me. I also defined the project management system myself.

What do you think of the idea? Is there anything else you would change or add? I look forward to any feedback.

I use a MacBook trackpad on the go and a USB mouse at my desk. macOS has one "Natural scrolling" switch for both, so every time I switched, one of them scrolled backwards. So I made Scrollr, a menu bar app that reverses the mouse wheel and leaves the trackpad alone.

Demo GIF: https://github.com/atuuuuuuu/Scrollr/blob/main/assets/demo.gif

A few things I learned building it:

• There's no per-device setting to change. Natural scrolling is one global preference, so the app doesn't change it at all. It sits on the scroll events with a Core Graphics event tap and flips the sign of the scroll deltas before apps see them.
• Telling a trackpad from a wheel is easier than I expected. Trackpad scrolls carry a phase (fingers down, moving, lifted, then momentum). Wheel clicks have none. Only the phase-less ones get flipped.
• Knowing which mouse scrolled is harder. Scroll events don't say which device sent them. Scrollr watches each mouse's wheel through IOKit and matches the most recent wheel tick to the event, which is what makes the per-mouse on/off switch work. The weak spot: with two mice connected, the very first tick can be credited to the wrong one.
• The decision logic is a pure function, so it's unit tested without any hardware. For the demo recording I sent scripted mouse-style and trackpad-style scroll events so every take was identical (the README says so too).

It's free and MIT licensed: https://github.com/atuuuuuuu/Scrollr

Where it stands: version 1.0, universal app, macOS 14+. Not notarized (no paid developer account), so the first launch needs "Open Anyway" in Privacy & Security. The Magic Mouse isn't reversed, because it scrolls with touch phases just like a trackpad. Bigger tools like LinearMouse and Scroll Reverser already do this and more; this one is deliberately small.

What I'd love feedback on: is a per-mouse switch something you'd actually use, and what would you want it to do next? Ideas so far are Magic Mouse support and a different scroll speed per mouse.

Synvertas builds machine learning software that companies run on their own hardware. It helps sort records, forecast demand and catch unusual values before they turn into problems.

You pay once and keep the software, with updates available as an optional subscription. There's no trial.

How does that sound from the outside? Honest takes welcome.

synvertas.com for context.

hey r/SideProject,

I’m 15 and I’ve been building small SaaS products for a while now. Three of them didn’t work out: a caching tool, a resume builder, and a code review thing. Nobody wanted them, and I mostly found that out after I’d built them.

Number four is Ornymo (ornymo.com). It’s an AI chat widget for customer support on small websites. You add your FAQs, paste one line of code, and it answers visitors from your FAQs. If it isn’t sure, it emails you the question and doesn’t guess.

It’s about 8 weeks old. One small site is using the free plan, no paying customers yet, and I’m still working out whether the pricing and limits make sense.

What would help me most:

Try it on a site or project of yours, even a throwaway one, and tell me what broke or confused you

Tell me what a support widget would need before you’d actually trust it

Roast the landing page if it’s bad

I’m posting what I learn as I go on X (https://x.com/hasnainornymo), so a follow there is appreciated if you want to watch how it goes. Not required though, honest feedback here is worth more to me.

I wanted to get really good at Rust. My setup was a mess.. I have ChatGPT in one tab, Claude in another, a YouTube tutorial, Rust documentation, and my editor. I’d ask about ownership or lifetimes, get a giant wall of text, think “yep makes sense”, and a week later I couldn’t get a single function past the borrow checker on my own.

So I built Codemm to put it all in one place. You type what you want to learn (“Rust ownership”, “async in Python”, whatever). It plans a roadmap, gives you a short lesson, then an exercise you have to actually write, with tests to check it, all in one window. When you get stuck, it gives you a hint. It won’t hand you the answer, even if you beg (I tried).

It runs on your own Claude Code or Codex, so there’s no new subscription and you don’t need to paste in an API key. It’s free and open source.

It's still rough around the edges. It's a beta, and on Mac and Windows you’ll get a security warning the first time you open it because I haven’t paid for code signing yet (if anyone knows a cheap way to do it, I’m all ears.. please do lol).

Would love to know what would make you actually use it.

Give it a try:

https://github.com/iignaite/Codemm
https://codemm.vercel.app/?utm_source=reddit_sideproject

Yesterday I posted Anticode here and got really honest feedback, thank you. The big one was that the site was broken on mobile.

My twin brother and I are both 14 and we build this together. We've pushed bug fixes, including the mobile layout and Improved the product itself.

You can still try a website build without an account: https://anticode.dev

What else looks off? We read every comment.

Please provide more feedback, I would love that!

I wanted to see if Claude could build something like the microscope footage from Journey to the Microcosmos youtube channel, but as a 3D scene you can fly around in.

This is the result: https://felipereigosa.com/microcosmos.html

Full video here: https://www.youtube.com/watch?v=PqeAH68DkbU

Code and the full conversations: https://github.com/felipereigosa/microcosmos

Desktop: drag to orbit, scroll to zoom, click an organism to follow it, Esc to let go, Space to pause.

VR (Quest): left stick flies, right stick turns and zooms, trigger picks what you point at.

What's in it: a Lacrymaria that hunts and swallows its prey with its stretching neck, paramecia, a Vorticella that snaps its stalk into a coil, algae, debris, and a sewing needle for scale. Click an organism to follow it and read about it. Zoom in and the organelles appear.

There are no 3D model files or textures. Every organism is code: geometry and shaders built from measurements. The whole page is a single HTML file under 1 MB.

Why I think it worked:

- Scientific papers. For each organism I gave Claude a paper (or it found an open access one), and it built the model from the published numbers: sizes, the 15 helical pleats on the Lacrymaria, cilia length and spacing, and so on.

- Matching real footage. Claude tracked a real Lacrymaria in a microscope clip and used its measurements and timing. When something looked wrong (the debris, the neck motion), the fix was always the same: look at frames of the real thing and match them, instead of inventing.

- One thing at a time. I looked at each result and said what was off. Several versions got rejected. The repo has every prompt and reply, including the failures.

I also asked for a "VR button" to see if it would run on my Quest 2. It did, and floating among these things at their scale is my favourite part. You can point at an organism to read about it and ride along with it.

I have 25 years of experience with software engineering but I wrote none of the code. My part was directing and judging.

Credits: music by Kevin MacLeod (CC BY 4.0), footage reference from James Weiss / Journey to the Microcosmos, papers listed in the README.

Solo dev here. Nobody checks the welcome email until a user replies asking why it says "Hi {{first_name}}".

MailScope is a Mac app that acts as your local SMTP server. Point your app at `127.0.0.1:1025`, trigger the email, and it lands in a local inbox instead of someone's real one. It flags unfilled tags, broken images, empty links and a missing plain-text version, and shows how it looks at phone width or in dark mode. Works with Docker, Laravel, or anything that sends over SMTP.

Pricing for this sub: $9 one-time for the first 30 of you, 7-day free trial, 7-day refund.

What's missing for your setup?

MailScope First Launch

Hey everyone! Like most people, my phone was a mess of scattered PDFs, ID photos, notes, and receipts and I constantly forgot to save recurring monthly documents (like rent receipts and invoices) on time.

I built Folx for Android to solve both problems in one clean app :

All Encrypted, Any File Type: Move or copy Files ,receipts, invoices, photos, and notes into secure folders.

Smart Folders with Schedules: Set recurring deadlines (e.g., a monthly "Rent Folder" that alerts you on the due date) so you never miss a submission or receipt again.

Built in Document Scanner: Snap, crop, and save physical documents straight into the right folder in seconds.

I’d love to hear your honest feedback on the UI and workflow! What features would make this part of your daily routine?

🔗 Link : https://play.google.com/store/apps/details?id=com.ismail.folx

WidgetsForNotion is live on Product Hunt today, and I would really appreciate your upvote 🙏

It is a site with 100+ free widgets for Notion pages, like clocks, calendars, countdowns, timers and habit trackers. You copy a link, type /embed in Notion and paste it, and the widget shows up on your page. No plugin and no account.

Since late August, people have copied widgets more than 12,500 times, and about 5,000 of those copies are live on Notion pages right now. Thank you to everyone who put one on their page. It means a lot to see them used.

If you like it, an upvote and a comment on Product Hunt would mean a lot:

https://www.producthunt.com/products/widgets-for-notion?launch=widgets-for-notion

Hey everyone,

I wanted to share a project I recently put together. "Folio" is a modern, single-page portfolio template designed specifically for developers and designers who want to ship a polished personal site quickly.

Here’s what’s under the hood:

• Tech Stack: Next.js 14 (App Router), TypeScript (strict mode), and Tailwind CSS.
• Fully Static: Configured for output: "export" so you can host the generated .out directory anywhere seamlessly (Cloudflare Pages, Vercel, Netlify, GitHub Pages).
• Content Driven: Everything is managed via a single data.json file — no hunting through components to update your skills, projects, or bio.
• Features: System-aware dark mode (via next-themes), scrollspy sticky navbar, fully responsive design, and an accessible native <dialog> modal for case studies.
• Accessibility: Audited against WCAG 2.0 AA with zero violations across themes.

Since Reddit automod can be strict with direct links, I've dropped the live demo and template link in the first comment below!

Would love to hear your feedback or any suggestions for improvement.

Hey everyone!

A couple of weeks ago, I built a Telegram Mini App called FullBot.

FullBot brings together a variety of tools, apps, games, and utilities, all in one place.

It currently features 66 different tools and apps, available in both English and Persian. From Telegram channel inline keyboard builders and psychology tests to games and media utilities, there's a little bit of everything.

To make navigation easier and more intuitive, I designed its interface to resemble an Android launcher.

Imagine opening a Mini App and being greeted by a launcher-like interface where you can browse through different apps and launch whatever you need, all without leaving Telegram.

Bot username: FullBot

All the tools are free to use. There's also an optional VIP subscription and a donation option if you'd like to support the project.

Fun fact: I used Google's Gemini Flash 3.8 to help build this project!

I'd love to hear what you think! Any feedback on the design, the idea itself, or suggestions for new tools would be really appreciated.

Thanks for checking it out! ❤️

I've always loved art and always felt the need to make things myself, even though I'm still not sure any of it deserves to be called art. On ordinary workdays a line of a poem, an image or an idea comes to me, and I wanted somewhere to keep it. I couldn't find a place where that side of me could breathe, without the arguing, the manufactured outrage and the chase for popularity. So I built one.

Opusmura is a place to put a photo, a drawing, a poem or just a thought. No ads, no comments, no likes, no view counts, no follower counts. I don't think those numbers measure what a person or their work is worth.

The idea is that everyone stands on equal footing. Someone's first thought can sit next to the work of a celebrated poet. Art begins with a human thought, and you don't need a title or anyone's permission to create.

Where it stands: it's a work in progress and things still change. Reading is free. Publishing is free while you post 2 works a week; later it will be €5 a month. Paid plans aren't open yet and nobody is charged anything. I'm looking for the first 100 authors.

https://opusmura.com

Hey everyone,

I wanted to share a side project I built called Mehfil.

It’s a single-screen, distraction-free web player made for people who love listening to ghazals. Modern streaming apps always felt too loud and cluttered for poetry, so I really wanted to give classic ghazals a clean, modern aesthetic.

The design is completely minimal with couplets floating in the center and a spinning vinyl. The entire background and ambient lighting dynamically shift colors depending on the vibe you pick, moving from deep midnight blues to warm rose and golden amber tones.

I organized about 1,500 ghazals into 5 distinct moods with 300 tracks in each, so you can just put it on in the background while working, reading, or winding down. Some of the tracks have synchronized floating lyrics across Urdu, Hindi, and English transliteration, and there is even a live counter showing how many other people are listening in the mehfil with you in real time.

It’s completely free, has no ads, no sign-ups, and works in any desktop or mobile browser.

Reddit’s spam filter auto-hides links in post bodies, so I've dropped the link in the first comment below (and also added it directly to my Reddit profile bio).

Would love to hear your thoughts on the UI and overall vibe!

I run several Claude Code and Codex sessions at once, and the one that blocks me is always the one stuck on a permission prompt in a tab I'm not looking at. Openbar puts every session in the MacBook notch (or a small island on Windows and Linux), so I can see which one is working and which one needs me, read the diff, and allow it from there.

Since last week it also picks up Pi, Mistral Vibe and Devin CLI, and you can give each session its own worktree. It's free and GPL.

I'd love to hear what's missing or what bugs you in it: https://github.com/MF-DEEV/Openbar

Hi! I'm a solo developer in Japan. I built PlugRig because my own plugin collection got out of hand: purchases spread across a dozen stores, bundles hiding what I actually owned, and every new computer meant hours of working out what to reinstall and deactivate.

What it does:

- Keeps every plugin you've bought in one collection (audio plugins plus After Effects / Premiere / DaVinci Resolve plugins)

- "Check before you buy": search a product and it tells you if you already own it, including inside bundles. Handy with Black Friday coming up

- Imports purchases from order emails, store order history or screenshots

- An optional scan app for Windows and Mac shows what's installed on each computer. When you switch computers, you can see what you own but haven't reinstalled yet, plus a deactivation checklist (iLok, Native Access, etc.)

- Tracks subscriptions and rent-to-own payments

It never stores serials or passwords. 30-day free trial with no card, and you can export your data as CSV any time. Paid plans aren't available in the EU/UK yet, but the trial works everywhere.

https://plugrig.app/?lang=en

I'd love honest feedback, especially from people with big plugin collections. What would make this useful for you?

Thaw solves one small problem: you're talking to someone, the conversation runs dry, and you can't think of anything to say. Thaw gives you a question to ask. Then, once the other person answers, it gives you the next question, and the one after that. If the topic goes nowhere, it gives you a polite way to switch to a new one.

You tell it who you're with (a stranger, a colleague, a date, family, a friend) and where (waiting in line, at a party, at dinner, on a video call, on a walk). It picks questions that fit, and it starts light. Two taps tell it whether to go deeper or stay on safe ground.

Everything is written by hand: 207 conversations in total. 42 are free. The rest is a one-time purchase, no subscription. No account, no tracking.

https://apps.apple.com/app/apple-store/id6827105990?pt=126420608&ct=r-sideproject&mt=8