OrderlyAI: Turning Messy Customer Messages into Orders with Local AI
OrderlyAI: Turning Messy Customer Messages into Orders with Local AI This is a submission for the Hacktoberfest Open-Source AI Challenge Week 2: Sid…
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Edemy AI: Turning Online Learning into an Opportunity 🚀
Edemy AI: Turning Online Learning into an Opportunity 🚀 This is my submission for the Hacktoberfest Open-Source AI Challenge: Week 2 — Side Hustle .…
🏪 Ranchi Dukaan Pro — Predicting Stock Demand with TabPFN-TS
Smart Stock & Demand Predictor Can an AI forecast help a small shopkeeper make better stocking decisions? Small retailers have to decide what to…
I built an aurora forecast site on Cloudflare Workers and hit every limit they have
Every aurora app answers the wrong question. They show you Kp indexes, solar wind speed, magnetometer plots — great if you're a space-weather nerd.…
I built a free site that shows where any movie or show streams in 60+ countries
I kept searching for a movie and finding out it wasn’t on anything where I live. Streaming catalogs change a lot by country, and most “where to watc…
I built a free crypto bubble map for reading market momentum visually
Hi everyone, I've been working on Cryptobubblemap — a free web tool that turns the crypto market into an interactive bubble chart. I wanted to share…
I built a pay-to-rank leaderboard in 7 days - here's how the points system works
One evening I noticed sites charging $10k+ for the top spot on a simple "pay to rank" wall. I thought: the idea is fun, but the pricing locks out ev…
I Asked AI to Improve My Resume. It Started Asking Me for Numbers Instead.
The usual AI resume flow looks like this: old CV + job posting → LLM → improved CV It has a basic flaw. My old CV was already a heavily trimmed vers…
Should You Add Projects to Your CV?
cover image is from-> Image by tirachardz on Magnific 1. The Problem I was reviewing for software engineering roles, and at some point I noticed…
I built 100+ browser tools as a side project — here’s what I learned
I’ve been working on a side project called FroggoTools. It started pretty simply. I use small online tools all the time — calculators, converters, d…
How I Protected My Telegram Bot's AI Quota From Spam Users
I run a Telegram bot that uses Google's Gemini API for free-tier AI features. The free tier gives 1,500 requests per day. Last week, one user sent 1…
I Built a Fun Name-Based Love Calculator — Here's How It Works
A while back, I built a small side project called NameLoveCalculator — a simple tool that takes two names and generates a fun compatibility score. W…
The Blog Was the Shelf, the Lab Is the Workbench
I did not build joacod Lab because the internet needed another portfolio. It already has plenty of those, including some that are mostly screenshots…
I Built an IP KVM – BeaconKVM
I'm a programmer and entrepreneur from China. Before this, I built a SD-WAN product for the Chinese market—similar to Tailscale or ZeroTier—so my ba…
I'm 15 and I got on the front page of Hacker News with my side project
People keep asking how I did it. The honest answer: I didn't "do" anything special. I just shipped something weird and somebody on Hacker News happe…
No one asked, but I've written a C++ header-only library so you don't have to declare the variable again.
In my spare time, I wrote a header-only C++ library that will help you extract variable declarations from the main(...) function of one .cpp file to…
I Built an Anime Website Using the MERN Stack — Looking for Feedback
Hey everyone! 👋 I’ve been working on a full-stack anime website using the MERN stack (MongoDB, Express.js, React.js, Node.js), and I’d love to get f…
My broker said I'd made $18,000. The number was an aggregate over a query nobody could show me.
The number sat on my broker's home screen, green, precise to two decimals. Roughly eighteen thousand dollars, earned from investing, over the whole…
How I Built a Compound Interest Calculator Without Any Backend
While working on a side project recently, I needed a way to help users quickly understand how their savings could grow over time. Nothing fancy — ju…
I built a reverse leaderboard where getting to #1 means everybody hates you
Hi - Hola! I vibe-coded this little side project called Poopularity. The idea is basically a reverse leaderboard: the more people hate something, th…
The Freedom of Pet Projects
In June, I learned how to change diapers and convinced myself that 5 hours of sleep is a luxury. Somewhere in between, I also shipped iOS for Kombin…
I just launched a wiki site for "Beasts of Reincarnation" players
Hi DEV Community! 👋 As a developer who loves building side projects, I'm excited to share my latest creation: a dedicated wiki and guide site for th…
Building Suzi Chat: A retro MSN-style chat platform with mini-games
I built Suzi Chat to bring back the nostalgic feel of late-90s/early-2000s browser chat rooms. Key Features: Create and customize your own public or…
Building FindCoffeeMate: A Small MVP That Taught Me Big Lessons
As developers, we rarely run out of ideas. What we often run out of is the right people to build those ideas with. Over the years, I noticed a commo…
100% client-side dev toolkit (no data leaves your browser)
I’m a web developer based in South Korea. When working on my projects, I always felt a bit uneasy pasting my code, database logs, or API payloads in…
I built an in-browser passport & visa photo maker with zero server uploads (Looking for feedback!)
Hey everyone! 👋 I got frustrated seeing passport photo websites charge $15+ or upload private biometric portraits to third-party servers. So I built…
Is “leave a Telegram group now, get a way back later” useful — or just an overengineered bookmark?
Sometimes I want to leave a Telegram group for a while — not just mute or archive it — but still have a deliberate way back later. I built a small o…
I built a Chrome extension, got 100 installs, and 90% of users left. Here's what I'm fixing.
Somewhere around install #80, I stopped checking my Chrome Web Store dashboard every day. Not because I'd lost interest — because the number that ma…
I built a quiz-driven gift recommender (Next.js + Cloudflare Pages)
Most "AI gift finders" are a search box with a chatbot glued on. I wanted to build something different — a quiz-driven gift recommender that ranks r…
I Got Sick of Subscription Budget Apps. So I Built My Own With Telegram, Python, and a $0/Month Stack.
No logins. No monthly fees. No "Premium required to export your own data." Just you, a Telegram message, and a double-click. Try it now: @PennyTrak_…