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Web Widgets


These programs are distributed in the hope that they will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

Most are made available under the terms of the GNU General Public License as published by the Free Software Foundation, either version 2 of the License, or (at your option) any later version, but see the License conditions for each individual program.

These programs are in the form of Web Widgets which execute within a web browser. They are coded in HTML, CSS and javascript.

In most cases the files may also be downloaded for local use in a web browser.

The "images" below are live web widgets which are executing on this page. Information about most widgets can be obtained by clicking on the blue help balloons.


Timekeeper - with Dean Beedell

This is a web version of our Steampunk Orrery Calendar Clock Widget.

The calendar ring rotates by mouse control; the date displays according to ring position. The inner earth and moon rotate, the moon around the earth, the earth rotating around the central glow, following the track of the window circular frame. The inner wheel, with lots of bolts, rotates as the main calendar ring rotates.

Direct Link

Steampunk Clock - with Dean Beedell

This is a web version of the Steampunk Clock Widget.

Direct Link

New Icon Clock - with Dean Beedell

This is a web version of the New Icon Clock Widget.

Direct Link

U Boat Clock - with Dean Beedell

This is a web version of the U Boat Clock Yahoo! Widget.

Direct Link


AC 3-Phase Calculator

This is a web version of the AC 3-Phase Calculator Widget.

Direct Link or download the files for local use in your browser.

Attenuator Calculator

This is a web version of the Attenuator Widget.

Direct Link or download the files for local use in your browser.

Beat Meter

This is a web version of the Beat Meter Widget.

Direct Link or download the files for local use in your browser.

Coil Inductance Calculator

This is a web version of the Coil Inductance Calculator Widget.

Direct Link or download the files for local use in your browser.

Convert Time

This is a web version of the Convert Time Widget.

Direct Link or download the files for local use in your browser.

Convert Unix Time

This is a web version of the Convert Unix Time Widget.

Direct Link or download the files for local use in your browser.

DMX Converter

This is a web version of the DMXconverter Widget.

Direct Link or download the files for local use in your browser.

DTMF Dial

This is a web version of the DTMF Dial Widget.

Direct Link or download the files for local use in your browser.

EAN13 Barcode

This is a web version of the EAN13 Barcode Widget.

Direct Link or download the files for local use in your browser.

FFT Display

This is a web version of the FFT Display Widget.

Direct Link or download the files for local use in your browser.

HexDeCoder Calculator

This is a web version of the HexDeCoder Widget.

Direct Link or download the files for local use in your browser.

IBAN Checker

This is a web version of the IBAN_Checker Widget.

Direct Link or download the files for local use in your browser.

Interval Calculator

This is a web version of the Interval Calculator Widget.

Direct Link or download the files for local use in your browser.

LCR Resonance Calculator

This is a new Web Widget.

Direct Link or download the files for local use in your browser.

Lunar Date Calculator

This is a web version of the Lunar Date Widget.

Direct Link or download the files for local use in your browser.

Morse Key

This is a web version of the Morse Key Widget. It uses/requires HTML5 Audio and File APIs.
It uses a cookie to store the speed setting for use when it is next accessed.

Direct Link or download the files for local use in your browser.

NGR Converter

This is a web version of the NGR Converter Widget.

Direct Link or download the files for local use in your browser.

NetCalc - RF Impedance Calculator

This is a web version of the NetCalc Widget.

Direct Link or download the files for local use in your browser.

Direct Link for browser (wide) version

Ohm's Law Calculator

This is a web version of the Ohm's Law Calculator Widget.

Direct Link or download the files for local use in your browser.

PIN (De)Coder

This is a web version of the PIN (De)Coder Widget.

Direct Link or download the files for local use in your browser.

Resistors Calculator

This is a web version of the Resistors Calculator Widget.

Direct Link or download the files for local use in your browser.

Roman Kalculator

This is a web version of the Roman Kalculator Widget.

Direct Link or download the files for local use in your browser.

Roman Kalculator Hex

This is a web version of the Roman Kalculator Hex Widget.

Direct Link or download the files for local use in your browser.

Signal Test

This is a web version of the Signal Test Widget.

Direct Link or download the files for local use in your browser.

Sunrise Calculator

This is a web version of the Sunrise Calculator Widget.

Direct Link or download the files for local use in your browser.

Tx Line Calculator

This is a web version of the Tx Line Calculator Widget.

Direct Link or download the files for local use in your browser.

UUID Decode

This is a web version of the UUID Decode Widget.

Direct Link or download the files for local use in your browser.

Wiring Calculator

This is a web version of the Wiring Calculator Widget.

Direct Link or download the files for local use in your browser.


Pendulum Simulation

This is a simple example of a web widget.

Pendulum Simulation.

Modifier Key Emulation

On-screen modifier keys are useful on tablet computers that do not provide them in their on-screen keyboards.

Modifier Key Emulation.

GMT/UTC Clock


Last updated Tuesday, December 20, 2016.


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