Browse All Side Projects from Reddit

All Projects (6,211)

Ever wondered how massive a Blue Whale’s eye is? Or how teeny the world's weeniest frog is? Well n

Animals at their true size on your screen. Calibrate with a Bank Card, scroll from the smallest frog to the biggest beetle, and compare any two side by side or overlaid.

I made a free guitar fretboard explorer: any chord or scale across the whole neck, in 30 tunings inc

Every chord and scale tone across the whole guitar, bass, or ukulele fretboard, in any tuning.

I spent 572 days building my personal blog, then redesigned all of it into a universe of dots and li

宙と木，Koimsurai 的個人空間。一個寫代碼的人，偶爾造點東西。

Recrutas - I tracked about 100k job posts. The new ones vanish fastest.

Upload your resume once. Get live US roles from company career pages, ranked by fit with an honest verdict on each, then hear what happened after you apply. Free for candidates.

Glacier Planner — looking for feedback on a free Canadian retirement calculator

Compare starting CPP at 65 or 70 in a made-up Ontario projection. Keep everything else the same, see the annual detail, then try the free calculator without an account.

A tee time aggregator for golfers that doesn't suck

Browse Chicago-area golf courses and public tee times. Compare openings, prices and drive estimates around Chicago and nearby suburbs.

I built a 2-minute test: can you tell 2010s forum comments from AI ones? Most people score around a

Ten comments. Some by people, some by AI. Two minutes, no sign-up.

I built a free CSV cleaning tool and I'm looking for honest feedback

Check and fix CSV files with Navyik’s free online CSV validator. Find row errors, duplicates and invalid values. Private browser processing, no signup or uploads.

Stop searching, Start building

ZerfAi turns recurring founder frustrations into validated startup ideas. Follow real pain points into market signals and buildable opportunities.

CoolDock - Mac widgets that live where you can see them

CoolDock adds a beautiful second Dock to your Mac with live widgets for music, todos, calendar events, weather, search, system stats, quick actions, and more.

I'm a beginner and I built a free tool that checks Lovable, Bolt and Replit apps for common security

Free outside-in website security and bug check. A score, your most important issue and how to fix it.

I built a social network just for cars: every car gets a profile, a build log and a service history

CronCar este platforma pentru pasionații de mașini din România: garajul și istoricul de service al mașinii tale, anunțuri auto cu povestea lor, comunități pe modele și service-uri de încredere.

I made an agent to handle backlink outreach after getting tired of chasing partnerships

Find sites AI already cites and automate outreach to help your brand earn backlinks and get mentioned in ChatGPT, Google AI Overviews and other AI answers.

I built a free web app that ranks the top AI stories on X by actual breakthrough instead of engageme

The day in AI, as told by X. 4 stories from 222 X accounts on Tuesday, October 27: Anthropic Releases Lean 4 Proof Claiming an Internal Claude Model Independently Refuted the Exponential…

I built a cv tailoring tool for job applications: giving students 1 month free

Every student and academic on a verified .edu (or equivalent) email gets JobTailor Max free for 30 days, then $9.99/month. Land the internship without paying to apply.

An easy way to research candidates and ideas on your ballot

Explore every candidate and referendum on your local ballot through simplified bullet summaries backed by verified quotes, voting records, and campaign finance data.

Cineswipe - a movie & TV tracker I've been building solo for 3 years, now ~4k monthly users. Just re

Transform your movie and TV show experience with Cineswipe. Search, track, and discover content tailored just for you.

my cofounder and i built pitcher to help early-stage founders get discovered. would love feedback

Pitcher gives each early stage startup one free page: its pitch, founders, progress and what it needs. Read the pages, and follow the startups you care about with a free account.

Learn the vocabulary for better AI prompts

Short daily lessons that build the vocabulary you need to brief AI on design, writing, code, prompts, product and data. Spot the better version, learn the words, write the brief.

[Worth It Calcs] - I built a keep-or-sell calculator for my flat in India, because the rent math kep

Free calculator for NRIs: true rental yield after TDS, the rupee effect, India + US tax on a sale, and the break-even growth your flat needs.

I launched MojoTick today, a free market scanner for US stocks and crypto. Honest feedback welcome

Technical scanner for crypto and US equities. Ranked setups, not a broker.