AtomicDev Tools
Open app
30 tools shipped·v2.0.0 — fully local

Developer utilities, bloated apps refined.

Sub-second load. Zero installs. Single-purpose tools that respect your time — and your shortcuts.

Browse tools
base64
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  • Base64 Encoder / Decoder
    Encode or decode text · binary safe
    data ↵
  • Hash Generator
    MD5 · SHA-1 · SHA-256 · SHA-512
    data
  • API Tester
    Send a request — preview the body
    api
— Principles

Built around how you actually work.

Every tool is engineered to load instantly, hold focus, and stay out of the way of your terminal.

01

Sub-second start

Cold-start in under 500ms on any modern device. No splash screens, no auth walls, no telemetry beacons.

02

One job, perfectly

Each utility is single-purpose. Less surface area means fewer bugs, sharper UX, and predictable shortcuts.

03

Local first, always

Your input never leaves the browser. Hashes, diffs, formatting — everything runs on your machine.

30tools
Shipped
412ms
P95 cold start
0kb
Tracking
100%
Open source
— Library

A growing catalog.

Hand-picked tools developers reach for daily. Click any tile to launch — no install, no signup.