90+ tools.
One download. No internet required.
Every tapdot tool, as a native app for macOS, Windows, and Linux — free and open source. Works completely offline, right down to the first time you open it.
Works without internet
CurrencyConvert fetches exchange rates once a day when you're online, then caches them locally — that's the one exception. Every other tool in the app is fully offline, all the time: JSON tools, calculators, generators, editors, the lot. Turn off Wi-Fi on a plane and 90+ tools work exactly as well as they do at your desk. This isn't "offline mode" bolted onto a web app — the tools were built privacy-first from day one, so offline was never a special case to add.
Download
~190 MB · Not sure which chip? Apple menu → About This Mac.
Before you install
- 1Double-click the .dmg and drag tapdot into Applications, as usual.
- 2On first open, macOS will say "tapdot cannot be opened because it is from an unidentified developer." This is expected — see why below.
- 3Right-click (or Control-click) the app in Finder or Launchpad, then choose Open.
- 4Click Open again in the dialog that appears. One-time step — it launches normally after that.
- 1Run the downloaded .exe installer.
- 2Windows shows a blue screen: "Windows protected your PC." This is expected — see why below.
- 3Click More info, then Run anyway.
- 4Installation proceeds normally from there.
It isn't a judgment on the app — it's a judgment on the $99/year Apple Developer certificate and the ~$200–400/year Windows EV code-signing certificate that neither macOS nor Windows will skip the warning without. tapdot is a one-person, non-profit project — there's no revenue funding it, so those certificates aren't in the budget right now. The warning you're seeing is the absence of a paid certificate, not a red flag about what the app does.
What actually protects you here isn't a signature — it's that every line of this app is open source and publicly readable. You don't have to trust a company's certificate; you can read the exact code that runs on your machine before you run it. That's a stronger guarantee than code signing gives you for most signed apps, which you still can't inspect.
If enough people use tapdot Desktop that signing becomes affordable, both certificates are the very first thing that money goes toward — that warning screen is on the honest-to-goodness roadmap, not something being deferred indefinitely.
Why this exists
Free web tools usually pay for themselves with ads or your data — that's the whole reason a JSON formatter can come wrapped in three ad networks and a cookie banner. tapdot doesn't have that model: no ads, no accounts, no data collection to sell, and now, with the desktop app, not even a browser between you and the tool. Download it once, and 90+ tools work forever with no ongoing cost to you and no recurring reason for us to see what you're doing with them — because we can't.
What's included — 90+ tools
The four Chrome AI tools (AISummarize, AITranslate, AIWrite, AIRewrite) need Chrome's on-device model, which isn't part of Electron's bundled runtime — they'll show a "not available" message in the desktop app, same as they would in Firefox or Safari. Every other AI-assisted tool (ContractRead, JobDescriptionWriter, HeadlineScore, and others) already ships a working non-AI fallback for exactly this situation, so those keep working normally.