Browse All Side Projects from Reddit

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Overlaid: draw, zoom, spotlight your cursor and show keystrokes on your Mac screen while you present

Overlaid is a screen annotation app for Mac. Draw, zoom, spotlight your cursor and show keystrokes on your screen while you present, in any app, on any call. One-time purchase.

I built a tool to mix and match UI patterns from different websites

Good evening guys! I've been working on a side project for a while now, and I'm pretty excited to finally share it with you all. Every design project used to start the same way for me. 20+ browser tabs open, screenshots everywhere, and another messy Figma file full of inspiration I'd probably never look at again. It honestly got overwhelming having so many things open at once, and sometimes I'd spend more time collecting inspiration than actually designing. So I decided to

I got tired of re-explaining my projects to every AI, so I built a notebook we all share

Your AI saves decisions, reasoning and project context as notes. You read and edit them, and use them with any assistant you connect.

I built a Chrome extension to solve one annoying problem I kept having with ChatGPT and Claude

Mark up images inside AI conversations, add notes, and send them straight back to your AI. Works with ChatGPT and Claude.

I built a market-analysis engine that keeps its losses on the page. Tell me where the landing loses

Bias, entry, stop and targets stated before the outcome by Meridian Engine, by Horizon AI, and checked afterwards on public price series, losses included.

I turned the data grid inside our SaaS into its own product

Lattice Grid is a JavaScript data grid where one feed drives a board, a Gantt, charts, statistics and KPI tiles at once, and an edit in one view updates the rest in step. Zero dependencies, governed edits, and AI you can trust, built in.

Squeezed 6.8M raw tokens into 14k: Auditing openGym with rebrief

Curated links to top AI tools across writing, image generation, coding, productivity, and more.

I built an AI engineering agent from India — now I need developers to break it

OrbiterX is an autonomous AI engineering agent: it writes, runs, debugs, tests, and verifies your code end-to-end. Free public beta for macOS & Windows.

My very early browser tactics game on D&D rules — I need honest feedback before I build more

Dice, cover and exploding barrels. Lead a party of four through short arena fights — free, about 10 minutes, no download.

Pixolm - Two recorded workflows for AI image creation and editing

Create AI images from text or references, then edit with prompts and masks. Start free with 20 Credits in one Pixolm workspace.

I built a browser-only GIF background remover and learned why GIF transparency is so awkward

Remove the background from animated GIFs online for free. Upload a GIF, get a transparent GIF in seconds — no signup, no software, works in your browser.

I built Harmony, super simple event pages with RSVP tracking

Create a wedding, engagement, baby shower, or birthday invitation. Share one link. Guests RSVP in the browser. Free to start.

Fitvio - a self-hosted wall + phone dashboard that tells triathletes if their last workout made them

I do triathlon, and after every swim, ride or run I wanted to know one thing: was that better, the same or worse than my own similar sessions? So I built Fitvio. It runs on a Raspberry Pi at home, shows everything on a tablet in my hallway, and there's a phone app too. You can try it with made-up data, nothing to install: https://romanbrej.github.io/fitvio/ It's Python (FastAPI, SQLite) and React/TypeScript in one Docker image, and it reads your data from Garmin Connect or Intervals.icu.

I turned github stats into shared developer planet

A living planet shaped by code. Every GitHub commit, PR and review claims new ground. Explore the map and see where you rank.

I built a Chrome extension because I kept pausing YouTube to Google things I didn't understand

Turn YouTube videos with captions into AI summaries, searchable transcripts, and answers grounded in the video. Use Holumiq online or with Chrome.

The perfect abstract game, single easy rule, infinite depth, no draw, competitive

Play the Hex board game with other players or with AI.

Turns out dishwashers have a filter. Here's the tree-based organizer I built for stuff like that

Every note has a place. A tree for notes, links, and records - with reminders. Easy to start, hard to outgrow.

4Drivers — I've been building a car ownership platform since 2023. Looking for honest feedback

Platforma pro řidiče: profily aut, servisní záznamy, příběhy majitelů a hledání autoservisů. Najdi řešení svého problému nebo sdílej historii svého auta na 4Dr…

I built a free tool that turns deep-sky astrophotos into cinematic parallax videos

I'm into astrophotography and I always wanted to turn my photos into short videos, but the usual workflow (separate stars from the nebula, animate layers, add music) takes hours in video editors. So I built VideoEstelar: you upload a single deep-sky photo and it separates stars from nebulosity, applies different zoom speeds to each layer to create a parallax effect, adds camera rotation, bloom and vignette, and renders a vertical/square/landscape video. You can upload your own audio or

I built Yaaro.chat a simple anonymous chat with strangers

Free anonymous chat with random strangers. No sign up, no account, no history. The best Omegle alternative in 2026 — instant, private, and free forever.

JobFoundry : I built an open-source job search pipeline instead of managing 50 tabs and a spreadshee

Local-first AI pipeline for 87 job boards, available as a Docker deployment or ready-made Linux AppImage, Windows MSIX, or macOS (Apple Silicon) Homebrew.

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