Browse All Side Projects from Reddit

All Projects (4,116)

I build a free tool where you write your system design as text and it tells you if it would hold up

Describe services, databases and queues as text. Write use cases as request flows and play them back on the diagram. Runs in your browser, no account needed, open source.

I built a self-hosted boilerplate for AI apps after getting tired of rebuilding the same infrastruct

Skip 180+ hours of boilerplate plumbing. Instant private GitHub access to full-stack multi-agent AI SaaS boilerplates with Stripe & Supabase.

Hated grocery shopping, HelloFresh & Gousto were too expensive, so built a tool!

Your own recipe library, a weekly meal plan, and one shopping list with links to your supermarket.

I built a free color picker that puts every color you pick on an infinite board

Free online color picker board. Pick colors from anywhere on your screen with the eyedropper, collect them on an infinite canvas and get color names, HEX, RGB, HSL, HSV, OKLCH and CMYK values, Tailwind shades, WCAG contrast checks and code exports for CSS, Tailwind, SCSS, Swift and Jetpack Compose.

Automated Revision system for Leetcode with Analysis

I used to forget the approaches of solved CP problems on leetcode, and that's when I realised, Revision is more important than solving a problem.... But what's more difficult than that realisation was to follow it everyday. Solving a medium level problem takes abt an hour, and then manually taking note of learning outcomes was really hard for me. So I built a system (Extension + Website) that automatically tracks submissions, schedules solved problems based on the approach and attempts t

I co-founded Cymbal.fm. After five years at Chess.com, I’m building a music community again.

The social app for sharing songs and movies — and finding people who love the same ones.

I built a website with over a million pixelated pigeons. People can create their own, or adopt one!

Generate, identify and document pigeons on the internet.

I built a no-code text processing toolkit that runs entirely in your browser

Deterministic text generation and batch processing. Runs entirely in your browser.

I kept the awkward pauses in my video, then replayed the same take with the edit

Turn a talking-head phone video into a finished vertical reel: retakes and pauses cut, captions on every word, your brand on every scene, ready to post.

I've been photographing Moonrises for 2 years, so I built my own free Moon photography planner

Plan your Moon shot behind a chosen subject. Direction, observation corridors, terrain profile, and frame view.

I built a free browser game site with 5 of my own games. No downloads, no sign-ups, no in-app purcha

Free games you play right in your browser on a phone or a computer. No downloads and no sign-up.

Years into a free streaming app with no subscription. Here's the update that finally does what peopl

Record your iPhone or iPad screen, stream to YouTube, Twitch or RTMP, and go live with up to three friends on camera. Sparks support streamers and keep EveryCord’s servers running.

I built a business management SaaS specifically for diamond traders — Carat OS

Pre-launch web-based diamond and jewellery business software for stock, approvals, sales, collections, reports, permissions, and owner visibility. Request a demo.

I built PDC Radar: a free directory of HR webinars that earn SHRM/HRCI recertification credits, plus

This week's free HR webinars that earn SHRM PDCs and HRCI recertification credits, plus 98 upcoming HR conferences by state. Filter by credit type, ethics, live or on-demand, and date. Updated weekly.

Built a free, open-source native Mac app for offline PDF tools (no uploads)

Work with sensitive PDFs entirely offline on your Mac. Merge, compress, split, compare, and more. No uploads, accounts, or in-app tracking. Free and open source.

I built a Mac app that gives each AI coding agent its own lane, so they stop breaking each other

Lokstack is a free Mac app that gives each AI coding agent (Claude Code, Cursor, Codex) its own lane: a branch, a port and a database copy. It also shows every project, port and version on your Mac, explains why a project will not start, and cleans up the servers agents leave behind. Local only, no account.

I built a free JPEGmini alternative for Mac and iPhone. 2.0 just shipped, and it compresses photos r

Free photo and video compressor for Mac, iPhone and iPad. No ads, no subscriptions, everything stays on your device.

What if learning the Quran felt more like Duolingo?

Apprends à lire et mémoriser le Coran avec Al Minhaj sur iPhone et Android : alphabet, exercices mot à mot, récitation vocale et révision. Gratuit.

Launched my side project last week — looking for brutally honest feedback on the concept and landi

Explore the live creator leaderboard. Pump creators up or dump them down—the current score sets the rank.

Made a small VS Code extension that writes commit messages through Claude Code, so I could turn ever

Extension for Visual Studio Code - Consistent, style-locked commit messages from the Claude Code you are already signed in to.

LightScroll: Take control of your screen time (iOS / macOS)

LightScroll adds a pause before distracting apps and websites, so you can focus, follow your Controls, and make room for life beyond the screen.