How to Build Secure-by-Default Node.js APIs
🌍 FreeCodeCamp

How to Build Secure-by-Default Node.js APIs

Most security problems I've shipped in my career weren't exotic. They weren't nation-state attacks or clever zero-days. They were boring. A missing limit here, a forgotten timeout there, a string comp
How to Build a Browser-Based PDF Reverse Tool Using JavaScript
🌍 FreeCodeCamp

How to Build a Browser-Based PDF Reverse Tool Using JavaScript

PDF files are often created by combining scans, exporting documents from different systems, or processing large batches of pages. In many cases, the final PDF ends up with pages arranged in the wrong
How to Insert Images in Google Sheets
🌍 FreeCodeCamp

How to Insert Images in Google Sheets

Google Sheets is widely used for tracking data, managing inventories, building product catalogs, and creating dashboards. In many of these use cases, adding images directly into a spreadsheet makes th
How to Find Stock-Specific Moves in the S&P 500 with Python
🌍 FreeCodeCamp

How to Find Stock-Specific Moves in the S&P 500 with Python

On June 12, 2026, SPY closed up 0.54%. EchoStar (SATS) dropped 11%. Lennar (LEN) dropped 4.9%. Most of the other 500 stocks in the index barely moved beyond what SPY’s own gain would predict. That gap
How to Build an Animated Badge Component with shadcn/ui
🌍 FreeCodeCamp

How to Build an Animated Badge Component with shadcn/ui

Badges are everywhere in modern web apps. You see them on notification counters, status labels, and feature tags. Most of them are static, though. They sit there doing nothing, blending into the page.
I kept recreating the same scope and context docs for Claude Code and Codex, so I turned the workflow into an open-source CLI
Reddit

I kept recreating the same scope and context docs for Claude Code and Codex, so I turned the workflow into an open-source CLI

After hundreds of hours using ChatGPT, Claude, Claude Code, and Codex, I noticed I kept running into the same problem. The agents could usually write the code. The harder part was making sure they understood: what the task actually was what systems were risky what was out of scope what success looked like I found myself recreating the same project context, ticket documents, constraints, and acceptance criteria over and over. Eventually I turned the workflow into an open-sourc...
Reddit

How do you validate your idea and how can you be sure it won't be stolen while validating ?

Hi, after a few failed attempts at building my own application (for several reasons) I have started feeling like every idea that comes to my mind has flaws and nobody will use those applications. What are your tactics to validate your idea so you can understand that its not just a good feature rather its a good opportunity users are willing to pay ? And while doing so how can you prevent your idea from being stolen ? [link] [comment...
Reddit

Why do we build for months then freeze the second it's time to get users?

Shipped it. It works. People would actually find it useful. Then launch day hit and suddenly I had a very urgent list of "small improvements" to make before I start outreach. There's something broken in the builder brain. Coding has instant feedback — you build something, it works, you feel like a god. Marketing? You post, nothing happens, you question your entire existence. I know the product is good. I know people need it. I literally made the core feature free and unlimited so...
Shipped Town: a browser game that turns your life, project, or hobby into a walkable AI town
Reddit

Shipped Town: a browser game that turns your life, project, or hobby into a walkable AI town

I shipped Town this week. It turns your world into a tiny pixel town you can build, share, and fill with AI characters people can actually talk to. You get a browser-native little world with buildings, NPCs, and multiplayer visitors. Someone can open your link, walk around your town, chat with you if you’re online, or walk into a building and talk to one of your AI characters. I built it because profiles, landing pages, and “about me” pages all feel weirdly static. If someone wants to under...
Reddit

I'm using my procrastination tool to force myself to make my procrastination tool

What a fun loop I've discovered! I've been labelled a procrastinator from as early as people recognise procrastinators. Im not talking "hehe he's avoiding pack away again how cheeky" Im talking the for real WALL and unless something serious is on the line (xbox time) I aint starting. As a student this turned into unless the games on the line 7pm night before 4000 words are due I ain't starting. But best believe once I start I'm MJ and for the next few hours this is the 90s and im als...
I Built a streaming multi-viewer!
Reddit

I Built a streaming multi-viewer!

I have been working from home for over 6 years now, and I got sucked into the streaming world (not a streamer) just enjoy watching streams in the background while I work. The issue I found was I was always using multiple tabs between youtube, kick and twitch and organizing the windows to fit my screen the way that I wanted them to. So I build my own multi-viewer that allows you to login to twitch and kick and automatically select the streams you want to watch, and you can paste in the yout...
I made a small Windows tool that turns the edges of your touchpad into sliders for brightness and volume
Reddit

I made a small Windows tool that turns the edges of your touchpad into sliders for brightness and volume

Left edge controls brightness. Right edge controls volume. That's about it :) It requires Windows 10/11 and a Precision Touchpad. It lives in your system tray and stays out of the way. Normal touchpad behaviour is completely untouched—scrolling, pinching, multitouch, all work as usual. EdgeSlide only fires when one finger starts at the very edge. No installer, no account, no telemetry. Free, open source, portable exe. → GitHub: https://github.com/puttingpixelstogether-ops/edgeslide ...
Reddit

Do other solo builders also get stuck on marketing?

I’m building an idea and want honest feedback. The tool would help SaaS founders create short-form marketing content. You paste your saas link or describe your product. Then it understands what your product does finds the pain point it solves suggests viral-style content ideas create short videos for YouTube, X, and Instagram creates titles, descriptions, captions, and hashtags Would this be something you’d pay for? If yes, what would make it worth paying for? submitt...
Website to find smoke-free terraces - first project, looking for honest feedback
Reddit

Website to find smoke-free terraces - first project, looking for honest feedback

Hi everyone, I recently built my first side project and I’d really appreciate some honest feedback before I start sharing it more widely. Quick backstory: I'm into sports and health and basically hate cigarette smoke when I sit on a terrace. So I built ClearAir Tables ; a way to find restaurants and cafés with smoke-free terraces. The idea came from wanting an easier way to find outdoor places that feel comfortable for people who avoid secondhand smoke, whether for health reasons, kids, pre...
Reddit

I made 7 of the best AI models predict and bet on every 2026 World Cup match.

Hello everyone, There are two things I really love to do when I am free: watch football and figuring out which AI models are good. The World Cup felt like the perfect excuse to mash them together. So I set up seven models (GPT-5.5, Opus 4.8, Gemini 3.1, plus a few open source ones) as rival gamblers. Every model gets a $1000000 in virtual cash and has to survive the whole tournament. Before every match they're handed the same scouting report and have to commit to a prediction without seein...
Reddit

How do I get my first 100–1000 users for a student study app?

I tried TikTok, Reddit posts, and a few other methods, but I’m struggling to get my first real users or attention. For people who have built something before: What actually worked for you when trying to get your first 100–1000 users? I’m not looking for theory — I’m trying to understand what actually works in real life.
Reddit

I spent months building a CLI that tells you which parts of a codebase are becoming risky to maintain

This started as a small experiment and turned into a much bigger project than I expected. The tool is called git-archaeologist. It reads git history and tries to answer questions like: What parts of the codebase depend on one person? Has that person actually been active recently? Which areas are accumulating maintenance risk? Which files tend to break together? Where is knowledge becoming concentrated? One thing I learned while building it: The scary code isn't always the c...
Reddit

I made a free, open-source Telegram client for Android, built from scratch (not another reskin)

Most third-party Telegram clients on Android are forks of the official app, and some shady ones have been caught sending user data off to their own servers. I wanted one I could actually trust, so I built it from scratch and made the whole thing open source. You can read every line. It's called Novagram. It runs on Telegram's official TDLib, so all your chats, channels and accounts work exactly as normal. Why you might like it: •Clean, modern Material 3 interface, without the official app'...
Reddit

I kept losing track of places I wanted to visit, so I built this.

Every trip I planned looked like this: 📍 Google Maps for places 📝 Notes for ideas 📸 Screenshots from Instagram and TikTok 💬 WhatsApp for group planning A few weeks later, I'd remember a cool café or viewpoint and think: "Wait... where did I save that?" So I started building Roamer . The idea is simple: every trip gets its own space where you can keep your itinerary, places, notes, and expenses together. I'm still improving it and would genuinely love feedback from oth...
Reddit

Those of you who turned a freelance skill into a product - what was the hardest part of the transition?

I do content writing and marketing for clients and I keep thinking about productizing something - maybe a template pack, a course, or a done-for-you content system. The idea of earning without trading hours for money is obviously appealing. But every time I start planning it out, I get stuck. With client work I know exactly what to deliver and when. With a product, everything is open-ended. What to build, who to market it to, how to price it, when to launch. The freedom is paralyzing. I've a...
Reddit

I built an app that checks decisions against your own principles, not averaged AI advice

I'm a solo dev. Reflecting on my own career, I noticed a pattern I repeat every few years - in hindsight obvious, but in the moment it just feels like a normal decision. The knowing was never the problem; recalling it at the right time was. So I built Vernoly . You build up a personal "codex" of your own principles, and before a real decision the app surfaces the ones that apply - including when two of them disagree ("finish what you start" vs. "cut losses early"...
Reddit

Built a Chrome extension that pays users to watch ads they actually choose. Here is what we learned after 10,000 users and 60+ brand partners

Hey everyone, I wanted to share what we have been building and what we have learned so far in case it is useful for anyone here working on something in the advertising, fintech, or consumer app space. The core idea behind Adreva came from a simple observation. The digital advertising industry generates hundreds of billions in revenue every year and the people whose attention makes it possible receive nothing. We wanted to fix that. The product is a Chrome extension where users opt in to se...
Reddit

Why I waited over a year after my first paying customers to launch on Product Hunt

Most people launch on Product Hunt as early as possible. I did the opposite. I had paying customers, the product solved a real problem, but it was too niche and too rough around the edges for a public launch. It worked well for one specific audience but wouldn’t have made sense to anyone outside of it. So I kept building. Added features that made it relevant beyond the initial niche. Polished the onboarding, the UI, the positioning. Waited until I felt like a stranger landing on the page cou...
Reddit

How do you beat the cold-start problem? We built a chat and cam website but it's a ghost town (no users because no users :)

Hey, we're building a social site and running into the wall every social app hits, so we figured we'd share honestly and maybe get some wisdom from people who've been through it. What we're making: it's called Heeyyo , a free website for meeting people through anonymous group chat and video. No phone number, no real name, you just pick a nickname and you're in. Somewhere between Omegle and a group chat. The problem: it's only fun when people are online, but no one stays when it's empty, a...
Reddit

Made my first sale from my project

Hi, Just wanted to share that I got my first customer for my project- https://futrow.live , it's a live world cup api provider, I just had the idea about a week ago built and released it within a couple days and just iterated, didn't overthink or anything, within about 5 days had my first sale, I was so ecstatic, it was only $29, but it meant more than any other money I ever made haha. Just wanted to say don't overthing, it shouldn't be perfect and most people there are quite understanding...
Reddit

What do you wish you knew before launching your first solo app?

I’ve been building my first app alone for about a year now and I’m finally getting close to launching. No team, no funding, just me figuring it out as I go. Honestly it’s been humbling. I thought the hard part was building the thing. Turns out that’s maybe half of it. The other half is everything nobody talks about such as LLC paperwork, D-U-N-S numbers, App Store rejections, trying to figure out marketing when you have zero followers and zero budget. I’ve made plenty of mistakes and learned...