Tools

Online

Offline Utilities Suite

Full suite of offline utilities, apps, and survival tools

Calculators

Travel, rations, battery, solar, water, weather.

Open Calculators

Checklists

First aid, bug-out bag, home readiness.

Open Checklists

Maps Tools

Coordinates, distance, bearings.

Open Maps Tools

Radio Tools

NOAA, HAM, emergency broadcast audio.

Open Radio Tools

File Browser

Browse local PDFs, images, and documents.

Open File Browser

CyberChef

Data transforms, crypto, forensics - fully offline.

Open CyberChef

Draw.io

Offline diagramming: flowcharts, wiring, planning.

Open Draw.io

PDF Reader

Offline PDF viewer powered by PDF.js.

Open PDF Reader

KeeWeb

Offline password vault (KeePass compatible).

Open KeeWeb

StackEdit

Offline markdown notebook for field notes.

Open StackEdit

Excalidraw

Sketch diagrams, maps, and plans offline.

Open Excalidraw

Mermaid Editor

Flowcharts, sequence diagrams, mind maps.

Open Mermaid

Pyodide

Run Python in your browser, fully offline.

Open Pyodide

SQL.js

SQLite in the browser for offline data work.

Open SQL.js

Games

Play NES, SNES, GBA, Genesis, and Arcade games.

Open Games