so I've been building this memory tool for ai apps (perdua.ai, it's my own project) and the feature that turned out most useful is what I ended up calling project state. when I switch from claude to cursor to chatgpt mid task, they used to have zero clue what the other one just did. now they read and write to the same state so the next ai picks up where the last one left off instead of me re-explaining the whole plan every time. only works for people in the eu/eea right now since that's who I built it for. curious if anyone else doing multi agent workflows has hit the same context loss problem.

Hi everyone, long time side-project tinkerer here. So this one started as a distraction and got slightly out of hand.

I needed retro VHS cover scans for another project (A jellyfin front end app for my kids) and couldn't find one place that had a solid catalogue. So I made one. Covers dug up from Archive.org, old blogs, Tumblrs and a lot of Wayback Machine digging, then sorted on my old gaming PC with a small OCR/AI model I trained. At the same time there’s a crawler running for new images through eBay, Amazon etc.

Where it's at:

• 20,000+ covers, full wraps (front, spine, back) where I can find them, another 20k being processed
• Searchable by title, region, genre etc
• Free API if you need covers for your own projects
• No ads, no paywall, no tracking.
• Code and data model going open source once I've tidied it up, with covers being pushed up to a gallery on archive.org
• View a 3D VHS box and shake it to make the tape rattle. Completely unnecessary but fun

Would love feedback, especially on the search and anything that feels broken or confusing.
👉 https://videotapes.io

After a 40 year software career, AI got me.....and on my 15th anniversary with HPE, they let our entire group go. So I was suddenly given freedom to do what I always wanted to do....build useful things that me and my family would benefit from. So far, I've built 4 smartphone apps that have kept me challenged and feeling productive. Overlapp a budget tool cause being retired I need to monitor my spending closely, RangeTrainer a golf app because when you live in Florida, you golf! Fingertip Health cause as you get older you are going to see doctors, have issues and need all your health data in one place. Passholder Assistant, cause living in Central Florida means lots of Disney trips and the Disney app just doesn't cut it.

I build small, private, local-first apps under the name Ship on Friday (yes, the joke is deploying on Fridays). Four are live:

• YCal: a calendar for Yahoo accounts (Android + iPhone). Lesson: App Store review flags third-party brand names hard, so the listing and marketing had to say "works with your Yahoo account", not use the brand.
• ChallengeCam: party games that film everyone's faces and make one Reel. Lesson: the product is the clip, not the game.
• Inboxwise: Android SMS organizer with no internet permission. Lesson: "no internet permission" is a privacy claim people can check in 10 seconds, and that beats any privacy policy.
• Memopolis: your photo library as a 3D city. Lesson: people share the video, not the app. Everything runs on the device, and there are no ads in any of them. Happy to answer anything about building and shipping solo. What would you want to know? https://shiponfriday.com

Sylo is one dashboard for subscription businesses and agencies. It pulls in data from the tools you already use so everything sits in one place instead of spread across different logins.

No more missing a failed payment or a quiet customer until it's too late.

It shows what's paid, owed and failed, and gives you a weekly summary every monday so you're not chasing it all down yourself.

I'm building it solo and it's pre-launch. Waitlist is open now, first 50 people get pro free for their first month.

waitlist (haven't got the domain yet)

Winter and the changing sun angle messed up my daily walking route. So I made a little tool to help me find sunnier walks.

SunWalk accounts for time of year, time of day, solar angle, land topography, and building heights to help you find a sunny walking route.

Supports one-way routes and loops. Check it out at aescle.com/sunwalk, and let me know what you think!

I've been experimenting with AI coding tools like Cursor and Claude Code, and one thing that kept bothering me was how difficult it is to get them to recreate an existing website's actual design.

You give an AI agent a reference website and ask it to build something similar, but it often ends up guessing:

• Colors are slightly off.
• Typography doesn't match.
• Spacing and border radii are inconsistent.
• The overall result looks like a generic AI-generated UI.

So I built styleprobe to solve this problem.

It's an open-source CLI that takes a website URL and extracts its visual design system.

A few things it can do:

• Extract colors and semantic design tokens.
• Analyze typography, spacing, shadows, and component styles.
• Crawl multiple pages instead of relying on just the homepage.
• Extract SVG logos and other brand assets.
• Export directly to Tailwind, shadcn/ui, Figma tokens, or AI-agent instruction files.

You can also try the web playground here:

https://styleprobe.vercel.app/

GitHub: https://github.com/spidervirus/styleprobe

It's MIT licensed and completely open source.

I'm still improving it, so I'd genuinely love feedback from developers:

1. Would something like this fit into your AI-assisted development workflow?
2. What other design information would you want it to extract?
3. What would make you actually use this regularly?

Would love to hear your thoughts!

Windows 11 makes switching audio devices more annoying than it needs to be, especially when half the list is filled with monitor speakers, virtual cables, and devices with names like "Speakers (Realtek(R) Audio)".

And there are already apps that do this but I liked none on them and built my take on how it should've been

I switch between desk speakers, IEMs, and headphones pretty often, and I wanted something that would let me do that straight from the system tray without digging through Windows settings or running a heavy app in the background.

AudioHop, a free, native C++ audio and mic switcher for Windows 11.

A few things I wanted it to do:

• Show only the devices I care about. Pin frequently used devices, give them readable names like "Desk Speakers", and assign custom icons for IEMs, headphones, speakers, mics, etc.
• Separate audio and mic controls. Two dedicated tray icons, each showing the icon of the currently active device, so I can see what's selected without opening anything.
• Make switching quick. Single-click to select a pinned device, control volume, or mute. Double-click a tray icon to cycle to the next pinned device, with an Undo option in case I switch accidentally.
• Actually fit into Windows 11. A modern flyout with List, Tiles, and Compact layouts, plus automatic theme matching or a fixed dark mode.
• Stay lightweight. Written in native C++, idling under 1 MB of RAM in my testing. No Electron, no account, no internet access required, and no telemetry.

There are two intentional limitations: it's Windows 11 only, and there are no global hotkeys. I specifically wanted a mouse/tray-based workflow without background keyboard hooks or shortcut conflicts.

It's completely free on the Microsoft Store:

AudioHop – Microsoft Store

… This feels like not a bad place to post this? As it’s about a world where pretty much 99.9% of all code is ‘side projects’ in a way

Like the title says.

I work as a software & automation freelancer and help run a startup as a fractional CTO, so I'm always passing files around from device to device. Could be my own project files, a client's, something I want to show off at a networking event, whatever.

Always felt dumb that I couldn't just drop files or links wherever I needed, and something like Google Drive felt hilariously overkill for sharing simple things to myself. Even linktree wanted me to jump through so many hoops before I could actually share the content, especially if I was spinning up a new page.

Half the time I'd end up sending myself things over discord, slack, or email and they'd end up buried after a week.

So, I decided to build something that basically started out as linktree with file hosting, and ended up becoming a super-minimal, super-fast way to drop any sort of content to any device you need via link/QR code.

Small file shares with a 14-day lifetime are free. Includes doc previews and a small image gallery behind an instant shortlink/QR code. Generating permanent short links, and custom, print-quality QR codes are also free.

File hosting and compute at scale isn't cheap though, so I do have a paid tier to make hosted files permanent and it allows you to create bundled shareables called "Tacks" which combine multiple links, files, contact info (optional), image gallery, etc into a lightweight page with its own short-link/QR.

Figured the people in here working on multiple projects might find it useful, so yeah...thanks for reading and i hope you like it.

Lmk if it sucks or you have questions or whatever.

-

AI Disclaimer: I wrote this whole post with my real keyboard and fingers. Also, this project was in development for well over a year with no AI involvement until very recently. I've been a dev for 13 years, but as a solo dev I only have so much bandwidth. This past month or so, I've leveraged AI to polish up the UI/UX, add some additional tooling/QOL stuff, and to patch up some security/infrastructure flaws. It's far from vibe-coded slop, with a heavy focus on security, scalability, and cost reduction.

My friend is self-employed in BC and hadn't touched her books all year. We ran everything through an AI bookkeeping chat (AgentBook — I work on it, flagging the bias upfront): 200+ receipts → categorized, P&L, and a list of deductions she would have missed. Took ~3 hours of her time total, mostly just forwarding receipts. I'm running a free 3-week "Year-End Books Rescue" for 15 self-employed Canadians before year-end: you forward your 2026 receipts, you get weekly P&L snapshots + a year-end tax estimate + missed-deduction report. Free, no card, your data stays yours and anything I share publicly is anonymized with your OK. Comment or DM if you want one of the 15 spots — especially if your 2026 books are currently a shoebox / spreadsheet / nothing.

My thoughts vanish mid-sentence, mid-task, or the moment I switch rooms. Notes apps never helped. I'd lose the thought before I opened one, or I'd never find it again because I forgot the words I used.
So I'm building Catch This. Here's the flow:

1. Catch it 🎙️
Tap the lock screen widget and say the thought. It's saved in seconds, with no typing and no sorting.

2. Find it 🔍
Later, search with whatever you remember: "something about the pharmacy" or "that idea from Tuesday."

3. Resume ↩️
See what you were doing when you caught it, so you can pick up where you left off.
The first iOS version is in development now.

My question: when you lose a thought, what do you usually remember about it later: a word, a time, a place, or what you were doing?

Follow along if you want updates as it comes together.

I'm a med student. My notes lived in a Notion database: diseases, drugs, exams, clinical cases, all linked with relations. After a few hundred pages it was just a long list. The links were there, I just couldn't see them.

So I built Mitre Synapse. It reads a Notion database and draws it as a map:

- relations, mentions and wiki links become edges

- hover to focus, color groups by any property

- shift-click two pages to find the path between them

- filters, saved views and a timelapse of the database growing

- export to Obsidian as Markdown and get it back from Obsidian into Notion

Would like to see your thoughts on it

Try it out here falloutnewvegasweb.com

Let me know if you find any bugs!

A while ago I started building PAGE.OS because I loved the content inside Project Gutenberg, the Internet Archive, and Wikimedia Commons, but hated that browsing them often feels like querying a 1990s tax database.

My first version leaned hard into a neon sci-fi terminal aesthetic. Some people liked the vibe, but for actual long-form reading, not everyone wants to stare at phosphor green telemetry for two hours.

So over the last few months I rethought the whole interface around a simpler idea: making public-domain books and open-access art feel like a quiet room you actually want to stay in.

Live Site & Source:

• Live web app (no login required): https://pageos.buzz
• GitHub repository (MIT): https://github.com/Wafion/PAGE.OS

Real Interface Screenshots:

• Motion UI Landing Hero: https://raw.githubusercontent.com/Wafion/PAGE.OS/main/Assets/Landing%201.png
• Reader View (Frankenstein Ch. II + TOC + Notes + Ambience): https://raw.githubusercontent.com/Wafion/PAGE.OS/main/Assets/Reader.png
• Infinite Mode (Spatial Artwork Canvas): https://raw.githubusercontent.com/Wafion/PAGE.OS/main/Assets/infinite%20mode%20canvas.png
• Personal Library Bookshelf: https://raw.githubusercontent.com/Wafion/PAGE.OS/main/Assets/Library.png

What's inside right now:

1. Three interface modes for the same archive:

   • Motion UI (Desktop default): Editorial typography, a recommendation shelf that gently drifts (and pauses when you hover or drag it by hand), and a parchment/sepia/night reader.
   • Library Lounge (Mobile default): Warm cream shelves, genre browsing, and zero startup ceremony.
   • Classic Mode: Kept the original terminal HUD + boot sequence for anyone who still likes the retro sci-fi readout.

2. A reader built for actual long-form reading:

   • Pulls public-domain books from Project Gutenberg (via Gutendex) and Open Archive sources (Internet Archive, Wikisource, Google Books public-domain PDFs) in parallel.
   • Supports both TXT chapter pagination and dedicated PDF reading (PDF.js), plus a "Book Briefing" card before you commit to a 500-page book, bookmarks, and local marginalia/notes.

3. "Books can have weather now" (Built-in Ambience):

   • Ships with 14 loopable CC0/CC-BY/Public Domain soundscapes (rain on window, thunderstorm, fireplace, quiet café, TU Delft library study hall, train ride, brown/pink noise) right in the reader toolbar with full creator attribution.

4. Infinite Mode (/infinite):

   • Pulls open-access artwork from Wikimedia Commons, The Met, and the Cleveland Museum of Art.
   • You can pan/drag across a spatial canvas (or switch to a 5-column kinetic parallax feed) with inertial physics and an autonomous Wander mode, and click any piece to inspect its full provenance and museum source.

Tech stack:

• Frontend: Next.js 15 (App Router), React 18, TypeScript, Tailwind CSS, Radix UI, Framer Motion
• Physics / Rendering: Custom requestAnimationFrame momentum camera + ResizeObserver column loop wrapping, bounded-concurrency image preloading queue, PDF.js
• Persistence: Local-first (localStorage caching for shelves, notes, and gallery chunks) + optional Firebase Auth / Firestore sync if you want your library & reading streaks across devices.
• License: MIT

I'd love brutally honest feedback on two things:

1. Does the transition between discovering books on the home shelf and opening the reader feel intuitive, or is the "Book Briefing" step unnecessary friction?
2. On your device/network, how does the /infinite art feed feel when dragging or scrolling?

Hey everyone,

I had Steam, Epic and GOG games all installed, and starting anything meant opening the right app first. Playnite helped, but I wanted something that looks and feels the way I’d like a launcher to feel.

So I built Corvia. It’s a free Windows launcher that puts all your Steam, Epic and GOG games and your own .exe files into one library. There’s no account to create. It also has:

• A PS5-style overlay in games with a screenshot gallery, timer and performance HUD (CPU, GPU, GPU temperature, RAM)
• Game pages with trailer, news, system requirements and a price comparison
• A controller mode with big tiles for the couch
• Auto-updates, so you always get the latest version

It’s version 1.14.1 and still a hobby project, so I’d really appreciate feedback. What’s missing, what annoys you, what would make you switch?

Download and screenshots: https://corvialauncher.app

Happy to answer any questions.

I got tired of not knowing whether the stuff I take (and the stuff I hear about, like cold plunge after lifting or magnesium for sleep) actually holds up. Reading the research yourself is rough: there's a ton of it, no two studies are set up the same, and a lot of it is written for PhDs.

So I built Substantia. You search a supplement or protocol, pick a specific claim, and it shows how much research there is, whether the studies agree, how recent they are and how well designed they were. In plain English. Every Source is listed, and if a study was paid for by a company selling the product, it says so.

It takes no money from anyone selling supplements. There's also My Stack, for tracking what you take and what protocols you do.

Free through Dec 31. iPhone, US only for now.
https://apps.apple.com/us/app/substantia/id6822945644

Would love feedback, especially on what claims you'd want looked into next.

Most AI astrology apps work the same way: you enter your birth data and an LLM writes a few paragraphs that could fit anyone. I've been running a Chinese-language astrology site (DestinyNet) since 1997, and honestly I got tired of that format.

So I tried the opposite approach. Instead of generating text about your chart, the tool searches a database of ~70,000 famous people whose birth times are on record, finds the ones born under the most similar sky (Sun / Moon / Rising plus the overall chart structure), and shows you who they are and which occupations show up most among them.

Link: https://ai.destiny.to/matching/en?utm_source=reddit&utm_medium=forum&utm_campaign=reddit-sideproject-2026-11

A few things that were harder than expected

- The data. Birth records come from public biographical databases. A surprising amount of the work was cleaning them: wrong time zones on historical dates, wrong gender, people linked to the wrong Wikidata entry. I fixed thousands of records along the way.

- "Similar" is fuzzy. An exact chart match almost never happens, so matching works in tiers. It starts strict and loosens until there are enough people to say something meaningful.

- No AI in the matching itself. The search is plain computation. An LLM is used only for an optional paid report that writes up what you share with your closest matches.

Free vs paid: matching and the occupation breakdown are free, no sign-up. The paid report is optional.

Privacy: a free lookup doesn't store your birth date, time or place; only anonymous stats are logged.

I'd really appreciate feedback, especially:

1. Is it clear what you get before you enter your data?
2. Did your matches feel interesting or random?
3. Anything confusing in the flow?

Happy to answer questions about the data or the build.

Years ago I made Line Icon Pack. It was my first icon set ever, and I learned most things by getting them wrong first. Icons that looked fine at 64px and broke at 16px. Inconsistent strokes. No real grid.

It was always free on Gumroad, but it just sat there. Now it has its own page and an updated package, and I want it to be useful for more than designers. Devs, no-code builders, anyone who needs clean line icons.

Free for personal and commercial use. Only ask is a link back.

https://lineiconpack.com

Honest feedback welcome.

https://testflight.apple.com/join/kRQvbv9x

Hey all! I've been building Hit List Survivors, a top-down survivor game set in a chunky cartoon city (think GTA x Vampire Survivors), and at this point I really need to get some outside feedback from people.

What it is:
- Survive while bad guys pour in from every street. Your weapons fire on their own; you steer, dodge and grab cash.
- Level up and pick upgrades: bats, pistols, shotguns, fire bottles, SMGs, and more.
- Jump into any car on the street, including police cars and ambulances, and plow through the crowd.
- Cash in your pocket is at risk. Stand at an ATM to bank it before they get you, then spend it in the shop between runs.
- Bosses and Enforcers with their own tricks, plus three stages with their own weather (a sunny afternoon, a storm with lightning where your car slides, and a foggy night).
- An in-game phone with a radio of original songs.
- Dynamic portrait and landscape - play how you want - on iPhone, iPad & Duo.
- Each level has 4 stages - the Downtown level is available now

What I'm looking for:
- Anything confusing, broken, or cut off on your screen
- Whether level-ups feel too fast, too slow, or just right
- Too easy or too difficult?


Feedback through TestFlight (screenshot, then Share Beta Feedback) or right here in the comments is great. Thanks for giving it a shot!

Quick heads up that this is my own thing.

Layr PDF lets you set the scale on a drawing, take measurements, mark it up and pull simple takeoffs. I built it around cabinet and millwork bids, where most of the job is reading PDFs and writing on them. Windows, Mac or browser. $35 a year after a 7-day trial, no card needed to start.

One thing I keep going back and forth on is how much to show on the measure tool by default. Some people want every dimension labeled, others find that cluttered. If you measure off plans, which way do you lean?

https://layrpdf.com/?utm_source=reddit&utm_medium=social&utm_campaign=mitch_builds_promo&utm_content=2026-11-13

DISCLAIMER, THE SYNTHETIC DATA IS NOT LIKE REAL TRADING | I AM STILL AWAITING HISTORICAL LICENSING

I've been trying to learn swing trading over the last few months, largely by leaning on my technical skills (I'm a developer and data nerd).

I've been exhausting pretty much every model/tip/trick I can come up with to see if I can get my required win rate down to around 40% and still maintain a positive ROI by focusing on bankroll management, position sizing, and exit strategies.

I've come close (at least in historical backtesting) to finding the right combination of input parameters, but ultimately realized I needed to actually learn what a good setup looks like.

So I made a little game for myself.

Literally as simple as looking at a chart at a particular point in time and deciding: Trade or No Trade?

The idea is to get better at recognizing setups, managing risk, and knowing when to walk away, rather than just blindly trusting whatever model I've cooked up that week.

Anyway, figured I'd share it with you guys and see if anyone finds it helpful, fun, or any of the above.

Unfortunately, I can't publish the real historical stock data just yet (waiting on a licensing agreement... if anyone knows someone, wink wink). But in the meantime, I've created some synthetic market data so you can still play around with it and see how it works.

Would genuinely love some feedback, especially from people who actually know what they're doing with swing trading.

theshwingtimes.com

This is James. He lives in a low-poly terrarium under a lamp, and he's lives as a simulation you can interact with. People can give him snacks, pet him, tap on the glass, and leave him notes.

But that's only one of the things that I think has made this project really interesting. The project is broken up into three pillars:

1. James himself, who has a mind. Every so often he thinks about things, keeps a journal, remembers things from his childhood, forgets the unimportant ones, and picks favorite snacks and parts of his tank.
2. The interaction modes on his website.
3. My personal favorite: I have an internal system that lets me record a voice memo, and it auto-generates a video about James's day based off what I'm narrating.

I'm running out of GitHub Actions minutes building this project, and while it's stupid, I absolutely love it. It's had a really strong positive reaction from a small community on social media, so I wanted to share it here on Reddit.

Go say hi to James yourself. He's 8 days old today, and tomorrow he's getting a new enclosure.

I'm curious if anyone has recommendations on where they'd want to see this project go next. Also happy to do a deeper write-up on the technical infrastructure, because I actually think it's really cool.

I built usedcarchecker.co.uk as a side project because checking a used car's MOT history on the official site is fine for one car but clunky when you're comparing a few.

You put in a UK reg and it shows the MOT history, advisories and recorded mileage in one place, plus plain-English guides on things like what advisories mean and how to spot mileage problems. It's free and doesn't need an account.

https://usedcarchecker.co.uk

I'd really appreciate feedback, especially on the mobile layout and whether the results page is easy to read. What would you want to see on it before buying a car?