
ZeroData Tools
The toolkit that never sees your data
What it does
A growing collection of 32+ free online tools that run entirely in your browser. Nothing is uploaded, stored, or sent to a server. Open DevTools → Network tab → use any tool → zero outbound requests. That's not a privacy policy — it's architecture. Formatters, converters, security tools, and utilities — all client-side. No accounts, no cookies, no tracking, no paywalls. We're starting with dev tools, but any utility that can run privately in a browser belongs here. More coming.
Does the same job
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DevTools SuiteMay 2026 · devtoolssuite.dev · ▲3Privacy-first dev tools run in browser. No login no tracking
ZeroApiToolsJun 2026 · zeroapitools.vercel.app · ▲3Free, powerful, and fast client-side tools for developers

More dev tools this month
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The first open-source price index for GPU compute
Dev tools · 10d ago · getcomputable.com

OpenTrailPaper is open-source bike computer firmware for the LilyGO T5S3 4.7" E-Paper PRO. It supports offline maps, GPX routes, FIT recording and Bluetooth sensors.
Dev tools · 2d ago · opentrailpaper.com

Open-source GTM skills for technical founders
Dev tools · 30d ago · gtmcofounder.com
Launched alongside, May 2026
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Parallel agents, diff reviewer, and multi-model comparisons
Dev tools · May 2026 · kilo.ai


- NW
Hey HN, Henry here from Cactus. We open-sourced Needle, a 26M parameter function-calling (tool use) model. It runs at 6000 tok/s prefill and 1200 tok/s decode on consumer devices. We were always frustrated by the little effort made towards building agentic models that run on budget phones, so we conducted investigations that led to an observation: agentic experiences are built upon tool calling, and massive models are overkill for it. Tool calling is fundamentally retrieval-and-assembly (match query to tool name, extract argument values, emit JSON), not reasoning. Cross-attention…
Life & fun · May 2026 · github.com
- FM
Dev tools · May 2026 · github.com