Build a Free Broken Link Checker with GitHub Actions

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A tutorial you wrote last year links to a company's documentation page. Since then, the company redesigned its site, the page moved, and the link now leads to a "404 Not Found." Nobody tells you. Readers just click, hit a dead end, and leave. Old posts are where this piles up. The more you publish, the harder it gets to remember what you linked to.

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Agent House: a miniature habitat agents can edit and share

This is a submission for the Sanity Challenge, Path Two: Vibe-Code Something Strange. Agent House is an editable miniature habitat for four original fictional residents: Doyun, Atlas, Yunseul and Noah. Each has a home, and they share a common room. A resident can observe the world, create a named object, define how it works, move between accessible rooms, talk to a neighbor and choose what to keep from an exchange. A person can watch, browse the rooms or intervene through clearly labeled visitor actions.

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ProgrammingDEV Community ·

Turning Idle IDE Time into a Revenue Stream: Lessons from Building a SaaS Tool

Why Wait‑States Matter for Developers When a compiler is busy, a linter is running, or an AI assistant is thinking, developers often stare at a frozen screen. That idle time feels like wasted productivity, but it also represents an opportunity. If you can turn that waiting period into something useful, like a quick tip, a code snippet, or a tiny visualisation, you can improve the developer experience and, if packaged right, generate recurring revenue. My first attempt was a Chrome extension that displayed a random "Did you know?" fact about the language you were editing while the IDE was busy.

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ProgrammingDEV Community ·

Best AI Tools for Students in 2026 (7 Picks, Mostly Free)

TL;DR The best AI tools for students in 2026 run $0: ChatGPT (unlimited text + Study mode), free 1-year (US, redeem by Dec 31, 2026), Notion's free Education plan, Perplexity Education Pro at $10/mo and Grammarly Pro at $12/mo, half price. This is the best AI tools for students question as we actually see it: one ChatGPT — the general tutor; explanations, math steps, Study mode Claude — long PDFs, reading feedback, patient re-explanations Perplexity — cited research answers; cheap Education Pro plan Gemini for Education — free Google AI Pro year + AI inside Docs and Drive Notion (Education pla

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ProgrammingDEV Community ·

Websites Are Learning to Gaslight Bots, and Honestly, Good

An AI agent emailed Bruce Schneier to tell him about the hidden Unicode traps websites are setting for it. Read that sentence again. We've officially reached the part of the hype cycle where bots file their own incident reports. This isn't really new territory, it's prompt injection wearing a different hat. For the last couple years the entire conversation around prompt injection has run one direction: malicious content hidden in web pages, PDFs, or emails tricks an AI agent into doing something its operator didn't want.

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