Vade Mecum Shelf

Vade Mecum Shelf

Collection of utilities wrapped into one single app.

Vade Mecum Shelf icon VADE MECUM SHELF

Vade Mecum Shelf is a collection of utilities wrapped into one single app, built with Electron.

This app works on Mac OS X, Linux and Windows operating systems.

Its look and feel is partly inspired by the brilliant Electron API Demos app, but it makes use of a more dynamic modular approach: each utility is made of an independent, self-contained folder including all necessary files.


The following utilities are currently available:

  • Chemical Elements
  • Chinese Zodiac
  • CIDR Calculator
  • Color Names
  • Departments of France
  • Digital Clock
  • HTTP Status Codes
  • IETF Language Tags
  • ISO Country Codes
  • ISO Language Codes
  • ISO Script Codes
  • Jabberwocky
  • JavaScript Parser
  • JavaScript Runner
  • JSON Formatter
  • LaTeX Math Renderer
  • List of U.S. States
  • Prefectures of Japan
  • Roman Numerals
  • System Information
  • Technical Definitions
  • Text Converter
  • Trigonometric Formulas

Chemical Elements

Full list of chemical elements, with live search:

Chemical Elements screenshot

Chinese Zodiac

Full list of the twelve Chinese zodiac signs, with live search:

Chinese Zodiac screenshot

CIDR Calculator

Simple CIDR calculators:

  • CIDR to IP Range
  • IP Range to CIDR List

CIDR Calculator screenshot

Color Names

Lists of color names, with live search:

  • W3C Color Names
  • X11 Color Names
  • Mac OS X Crayons

Color Names screenshot

Departments of France

Full list of French departments, with live search:

Departments of France screenshot

Digital Clock

Customizable clock, using language-sensitive text formatting for date and time:

Digital Clock screenshot

HTTP Status Codes

Full list of HTTP status codes, with definitions in several languages:

  • English
  • French
  • Japanese

HTTP Status Codes screenshot

IETF Language Tags

References for IETF BCP 47 language tags and subtags:

IETF Language Tags screenshot

ISO Country Codes

Full list of ISO 3166-1 country codes, with live search:

ISO Country Codes screenshot

ISO Language Codes

Full list of ISO 639-1 language codes, with live search:

ISO Language Codes screenshot

ISO Script Codes

Full list of ISO 15924 script codes, with live search:

ISO Script Codes screenshot


Typographic rendition of Lewis Carroll's nonsense poem "Jabberwocky":

Jabberwocky screenshot

JavaScript Parser

JavaScript code parser and tokenizer, based on Esprima:

JavaScript Parser screenshot

JavaScript Runner

JavaScript code runner, useful for quick testing/prototyping or data processing:

JavaScript Runner screenshot

JSON Formatter

JSON data formatter and validator:

JSON Formatter screenshot

LaTeX Math Renderer

LaTeX math expression renderer, using the KaTeX JavaScript library:

LaTeX Math Renderer screenshot

List of U.S. States

Full list of states and territories of the United States, with live search:

List of U.S. States screenshot

Prefectures of Japan

Full list of prefectures of Japan, with live search:

Prefectures of Japan screenshot

Roman Numerals

Converters between roman and arabic numerals:

  • Roman to Arabic Numeral
  • Arabic to Roman Numeral

Roman Numerals screenshot

System Information

Detailed list of system information, by category:

  • Framework
  • Main Process
  • Renderer Process
  • Application
  • Navigator
  • Operating System
  • OS User Info
  • Screen
  • Window
  • Environment

System Information screenshot

Technical Definitions

Lists of technical definitions:

  • Computing Abbreviations
  • Mac OS Release Names
  • Metric Prefixes | Fractions
  • Metric Prefixes | Multiples
  • IEC Binary Prefixes | Multiples
  • Name of a Polynomial by Degree

Technical Definitions screenshot

Text Converter

Encode and decode text according to several string formats:

  • JSON String
  • Hex String
  • Base64 String

Text Converter - Text Encoder screenshot

Text Converter - Text Decoder screenshot

Trigonometric Formulas

Sets of trigonometric formulas, by category:

  • Basic Definitions
  • Symmetry Identities
  • Cofunction Identities
  • Pythagorean Identities
  • Sum to Product
  • Product to Sum
  • Squares
  • Half Angle
  • Sum of Angles
  • Double Angle

Trigonometric Formulas screenshot


You'll need Node.js installed on your computer in order to build this app.

git clone
cd vade-mecum-shelf
npm install
npm start

If you don't wish to clone, you can download the source code.

Several scripts are also defined in the package.json file to build OS-specific bundles of the app, using the simple yet powerful Electron Packager Node module.
For instance, running the following command will create a Vade Mecum version for Mac OS X:

npm run build-darwin


You can download the latest release for Mac OS X.


The MIT License (MIT).

Copyright © 2017-2019 Michel MARIANI.


Something missing? Edit this app.

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