Your TV, thermostat and doorbell talk to the internet all day, and almost none of it is you. LAN Sheriff is a self-hosted, open-source monitor that maps those connections live and flags the one packet that doesn't belong. Zero-config install; it auto-uses its "Patrol" mode over libpcap to watch every device on your network, not just this machine. If your Dad's router is acting up, that's the security payoff: catching beaconing before it becomes a breach.
Histiq is a Chrome and Edge extension that indexes everything you read, full page text, collapsed FAQs, and PDFs, so you can find that article "about YC fundraising" even if you can't recall a single word of it. Everything runs in-browser: embeddings, search under 50ms, no cloud, no account. It quietly turns the thousands of pages you've already read into a local, queryable corpus instead of a broken search box.
Microphone flips the usual order: you describe an idea out loud, it turns the conversation into a problem statement, a testable hypothesis, and campaign-ready ad copy, then runs a small Meta campaign to see whether strangers actually feel the problem. A first pass takes days, not quarters, and you read the clicks against the decisions you wrote down before launch. What sets it apart is distribution: social media subagents that seed organic conversations run self-hosted on your own Raspberry Pi, not a shared cloud.
AI text is easy to demo and hard to judge. writing-eval flips that: you build a reusable style profile from approved prose, then check any Markdown draft against it for clarity, readability, rhythm, and vocabulary, all on-device with deterministic results and no hosted models. Reports surface current versus target values plus editing instructions, so it works as a regression gate, not just a vibe check. There's even an agent skill so LLM tooling can run the checks itself.
Founder Yana Welinder walks through how she runs a fashion brand end to end on ChatGPT and Codex, with no hired engineers. The sharp part: she isn't a coder, yet AI lets her build the whole operation alone. The real signal is what a single, non-technical person can now launch by themselves.
Box Blanks is a free parametric dieline generator that turns 479 box styles into print-ready templates straight in the browser. Pick a style, set dimensions and stock, and it redraws the folded-flat net with accurate cut, crease, and glue lines for pre-press. Packaging and print designers get what usually costs paid CAD or per-template fees, for nothing.