One indie maker shipping small web tools and iOS apps. These repos are the useful bits pulled out of them: open data, tiny zero-dependency libraries and CLIs.
| Repo | What it is | Comes from |
|---|---|---|
| ai-search-readiness | CLI: can ChatGPT, Perplexity and Claude crawlers reach and read your site? | Citelane |
| photo-to-coloring-page | Photo → printable coloring page in the browser (demo) | Linecraft |
| conversation-topics | 910 conversation, debate, ESL and writing topics as open JSON | Random Topics |
| promo-breakeven | Discount and ad math: break-even ROAS/CPA, max discount, BOGO | Evenline |
| product-video-specs | Product video upload limits for Shopify, TikTok, Reels, Shorts, Amazon | Folra |
| ai-video-qc | One ffmpeg pass that catches broken generated videos | duet.room |
| puppy-potty-schedule | Puppy potty intervals by age and a daily schedule | Puppy Routine |
| aion2-data | Aion 2 rift schedules, resets, servers, classes, Daevanion boards | Aion2 Atlas |
| workout-plan-schema | JSON Schema + validator for workout plans | Movo |
| spaced-repetition-lite | SM-2, Leitner and an exam-date-aware scheduler | Pip |
| zh-schedule-parser | Chinese & English schedule sentences → dates and repeat rules | Lili |
| coffee-brew-ratios | Brew ratios, grind sizes, water temps + calculators | Cuppa |
Writing about what worked (and what didn't) on dev.to and Hashnode.