Browse All Side Projects from Reddit

All Projects (4,086)

I got tired of losing good AI answers in endless chat feeds, so I built a zero-database web notepad

Hi everyone, I'm a solo dev from Japan. I use AI chat tools every day for coding and research, but one thing drove me crazy: the best answers, code snippets, and prompts always get buried in the endless chat history. I didn't want another heavy cloud note app, and I definitely didn't want to feed my private notes back into AI training. I just wanted a simple, lightweight place to save those answers locally as clean markdown (.md) files. So I made VanillaPad. It runs on pure PHP

A simple operating system for getting real work done with AI agents

How to Decide, Delegate, and Build Systems That Remember. A practical book for knowledge workers who want to use AI as a real operating layer.

Arca - a calmer iPhone reader for tech news and podcasts (55-second preview)

Join the waitlist to try Arca, a calmer way to follow technology news and podcasts.

301 users. Not viral, not huge but this project is finally growing.

Save links, articles, tools, videos, and research sources in one private vault. Find the right link later with AI — even when you only remember the idea.

looking for people to test a workout planner i’m building (closed beta)

Personalised daily workouts generated by AI

I kept hitting Claude Code limits mid-task, so I built a menu-bar app that shows every account's lim

Codex·Claude Code의 활동, 사용량, 남은 한도와 Codex 리셋권을 확인하세요. Mac·Windows에서 시작해 iPhone·Android로 이어서 확인하는 무료 Agent Cat.

My usual workflow involves n different file types, created by multiple AI agents and I had serious t

A free, native markdown viewer and reader that also opens PDF, Jupyter notebooks, LaTeX (with KaTeX math), JSON/YAML/XML, Parquet, SQLite, zip/tar archives, images, and 50+ code languages — with tabs, split view, and streamed viewing of huge logs and CSVs. Under 6MB. Windows, macOS, Linux.

I got tired of every free online scanner wanting my ID on their server, so I built one that runs in

LensUp is a free online document scanner: turn a photo into a clean, printable PDF — crop, de-shadow, and compress toward a target size. No upload, no sign-up.

First customer in 30 days!

A personal library for books, records, games, films, and the objects that tell your story.

I built a phone-first quoting and invoicing app for Australian tradies

Quotes, invoices and workshop tools for tradies. Sign in with an email code.

I built an app for shifting your identity: custom subliminals, hypnosis, meditation and EFT tapping,

Subliminals, meditations, hypnosis, and EFT tapping — generated for your specific identity work. Not generic self-help. Precise adjustments.

PressWork 4.5: import a whole Markdown folder — Notion, Obsidian, or just a folder of notes

Writing, data, signing and editorial production in a local-first ecosystem. For authors, professionals and publishers.

I removed my LLM app's guardrails one at a time and replayed recorded attacks. 4 of the 6 in the cha

The attacks this kit is tested against: what each one costs when it works, which guardrail stops it, and — in the same detail — what the evidence does not prove.

I made a macOS notch utility app named Halo

Claim a free Halo code while giveaway codes are available.

My side project ZOMBRA: a browser zombie horde shooter inspired by Left 4 Dead and Killing Floor

A noite é longa. A horda é maior. Sobrevivência zumbi co-op online no navegador.

I built a GitHub stats page that anyone can fork and use

250 contributions in 2026 · 81 repos · 20 stars received · 65 followers · Top: JavaScript, HTML, TypeScript

Maintenea – free workout log (sets + mobility + body progress), iOS in progress

Free workout log for strength, stretching and body progress on one timeline. No ads, no paid tier, data in the EU. Built for people who coach themselves.

I built an on-device iPhone storage cleaner (duplicates, screenshots, large videos) - looking for fe

X Cleanup is a phone storage cleaner for iPhone and iPad. Delete duplicate photos, similar images, screenshots, and large videos to free up storage. Private on-device cleanup — download free on the App Store.

I built a tool to extract hardcoded subtitles from videos, running entirely in the browser

Turn the subtitles burned into a video into a searchable subtitle library you can save as SRT — right in the browser. The video never leaves your computer.

I made a small site to make shadowing YouTube videos easier

Say it back and get scored word by word on EZ Shadow.

whatsheavier.com - Your daily weight estimation game! Can you beat the scale?

A blue whale or a school bus? Pile up the lighter one until the scale balances. Five new matchups every day, free in your browser.